Low Sodium Chicken Casserole Recipe: Heart-Healthy Comfort Food

Posted on September 2, 2025 by Maryann Desmond

Sick of bland low-sodium meals that taste like cardboard? This chicken casserole will make your taste buds do a happy dance while keeping your blood pressure in check! Seriously, who said healthy eating has to be boring?

Why This Recipe Works

  • Using fresh herbs and aromatics like garlic, onions, and thyme creates layers of flavor that compensate for the lack of salt without overwhelming your palate
  • The combination of lean chicken breast and hearty vegetables provides a satisfying texture and nutritional balance that keeps you full for hours
  • Homemade low-sodium chicken broth and carefully selected no-salt-added ingredients ensure you control exactly what goes into your dish
  • Baking at the perfect temperature creates a golden-brown crust while keeping the interior moist and tender
  • The recipe uses natural flavor enhancers like lemon juice and vinegar to brighten the dish without adding sodium

Ingredients

  • 2 pounds boneless, skinless chicken breasts, cut into 1-inch cubes
  • 3 cups low-sodium chicken broth, homemade preferred
  • 2 cups whole wheat elbow pasta, uncooked
  • 1 large yellow onion, finely diced
  • 4 cloves garlic, minced
  • 2 cups fresh broccoli florets, chopped into bite-sized pieces
  • 1 red bell pepper, diced
  • 8 ounces cremini mushrooms, sliced
  • 1 cup frozen peas
  • 1 cup plain Greek yogurt
  • 2 tablespoons olive oil
  • 2 tablespoons all-purpose flour
  • 1 tablespoon fresh thyme leaves
  • 1 teaspoon smoked paprika
  • ½ teaspoon black pepper
  • ¼ teaspoon cayenne pepper (optional)
  • 2 tablespoons fresh lemon juice
  • ½ cup whole wheat breadcrumbs
  • 2 tablespoons grated Parmesan cheese (optional)
  • 2 tablespoons chopped fresh parsley for garnish

Equipment Needed

  • Large skillet or Dutch oven
  • 9×13 inch baking dish
  • Cutting board and sharp knife
  • Measuring cups and spoons
  • Mixing bowls
  • Whisk
  • Wooden spoon or spatula
  • Aluminum foil

Instructions

Low Sodium Chicken Casserole Recipe

Prepare Your Ingredients and Preheat the Oven

Before we dive into the cooking process, let’s get everything ready to go! Preheat your oven to 375°F and grab that 9×13 inch baking dish—no need to grease it since we’re keeping things heart-healthy. Now, chop your chicken into uniform 1-inch cubes—this ensures even cooking and perfect texture in every bite. Dice that onion until you have about 1½ cups, mince the garlic until it’s fragrant and ready to work its magic, and chop the broccoli and bell pepper into bite-sized pieces. Measure out your pasta, spices, and have all your ingredients within arm’s reach. This mise en place approach will make the cooking process smooth and enjoyable rather than stressful. Trust me, nothing kills the cooking vibe faster than frantically searching for ingredients while your food is burning!

Cook the Chicken and Vegetables

Heat 1 tablespoon of olive oil in your large skillet over medium-high heat until it shimmers—about 2 minutes should do the trick. Add the chicken cubes in a single layer, making sure not to overcrowd the pan (you might need to work in batches). Cook for 4-5 minutes per side until the chicken develops a beautiful golden-brown crust and reaches an internal temperature of 165°F when checked with an instant-read thermometer. Remove the chicken and set aside. In the same skillet, add the remaining tablespoon of oil and toss in your diced onions, cooking for 3-4 minutes until they become translucent and slightly caramelized. Add the minced garlic and cook for another 60 seconds until fragrant—be careful not to burn it! Throw in the mushrooms and bell pepper, cooking for 4-5 minutes until they soften and release their natural juices. This layering of flavors creates a fantastic foundation for our casserole.

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Create the Creamy Sauce Base

Sprinkle the 2 tablespoons of flour over the cooked vegetables and stir continuously for about 2 minutes until the raw flour taste cooks out and the mixture thickens slightly. Slowly pour in the 3 cups of low-sodium chicken broth while whisking constantly to prevent lumps from forming—this is crucial for a smooth sauce! Bring the mixture to a gentle simmer and let it cook for 3-4 minutes until it thickens enough to coat the back of a spoon. Remove from heat and stir in the Greek yogurt until fully incorporated—this adds creaminess without the sodium content of traditional cream sauces. Add the fresh thyme, smoked paprika, black pepper, and optional cayenne, then stir in the lemon juice which will brighten all the flavors. Fold in the frozen peas and return the cooked chicken to the skillet, mixing everything together until well combined.

Assemble and Bake the Casserole

Spread the uncooked whole wheat elbow pasta evenly across the bottom of your 9×13 inch baking dish—this one-pan method means fewer dishes to wash later! Pour the chicken and vegetable mixture over the pasta, making sure everything is distributed evenly. Gently press down with a spatula to ensure the pasta is fully submerged in the liquid—this is essential for proper cooking. If the sauce doesn’t quite cover the pasta, add a splash more low-sodium broth. In a small bowl, mix the whole wheat breadcrumbs with optional Parmesan cheese if using, then sprinkle this mixture evenly over the top of the casserole. Cover tightly with aluminum foil and bake at 375°F for 30 minutes—this initial covered baking allows the pasta to cook through without drying out.

Finish Baking and Rest Before Serving

After 30 minutes, carefully remove the foil (watch out for steam!) and continue baking uncovered for another 15-20 minutes. You’ll know it’s ready when the top is golden brown and crispy, the edges are bubbling enthusiastically, and the pasta is tender when tested with a fork. Insert that instant-read thermometer into the center—it should read at least 165°F to ensure food safety. Once perfectly baked, remove from the oven and let it rest for 10-15 minutes—this allows the sauce to thicken further and makes serving much easier. Sprinkle with fresh chopped parsley for a pop of color and freshness. Serve generous portions while still warm, and watch as everyone goes back for seconds without even missing the salt!

Tips and Tricks

If you really want to elevate this low-sodium chicken casserole from great to extraordinary, here are some pro tips that’ll make you feel like a kitchen wizard. First, consider making your own low-sodium chicken broth—it’s easier than you think! Simmer chicken bones with carrots, celery, onion, garlic, and herbs like parsley and thyme for 4-6 hours, then strain and refrigerate. Homemade broth has a depth of flavor that store-bought versions can’t match, even the low-sodium ones. For an extra flavor boost without sodium, try roasting your vegetables before adding them to the casserole. Toss the broccoli, bell peppers, and mushrooms with a tablespoon of olive oil and spread them on a baking sheet. Roast at 400°F for 15-20 minutes until slightly caramelized—this intensifies their natural sweetness and adds another layer of complexity to the dish.

When it comes to the creamy component, Greek yogurt is fantastic, but if you’re concerned about it curdling during baking, you can stabilize it with a teaspoon of cornstarch mixed with a tablespoon of cold water before adding it to the sauce. Another great option is using pureed cauliflower—steam a head of cauliflower until very tender, then blend with a quarter cup of low-sodium broth until smooth. This creates an incredibly creamy texture with added nutrients and zero dairy if you’re avoiding it. For the breadcrumb topping, try making your own from whole grain bread—toast slices until completely dry, then pulse in a food processor with herbs like rosemary or oregano. You can also add nutritional yeast for a cheesy flavor without the sodium content of real cheese.

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Don’t overlook the power of acid in low-sodium cooking! A splash of vinegar (apple cider or white wine work well) or citrus juice right before serving can make all the difference in brightening flavors. Fresh herbs are your best friends—keep a small herb garden on your windowsill with parsley, basil, chives, and dill to add fresh flavor at the end. If you’re making this ahead, assemble the casserole but hold off on adding the breadcrumb topping until just before baking to keep it crispy. Leftovers reheat beautifully in the oven at 350°F for 20 minutes covered with foil, then 10 minutes uncovered to restore that crispy top. Finally, invest in a good quality instant-read thermometer—it takes the guesswork out of cooking and ensures perfect results every time.

Recipe Variations

  • For a Mexican-inspired twist, replace the thyme and paprika with 2 tablespoons of no-salt-added taco seasoning, use corn instead of peas, and top with crushed baked tortilla chips mixed with a teaspoon of chili powder. Serve with fresh lime wedges and chopped cilantro for a fiesta in every bite that’ll make you forget you’re eating low-sodium.
  • Create an Italian version by swapping the thyme for 1 tablespoon of Italian seasoning, adding ½ cup of chopped sun-dried tomatoes (packed in oil, drained), and using zucchini instead of broccoli. Top with a mixture of whole wheat breadcrumbs, 2 tablespoons of nutritional yeast, and 1 teaspoon of garlic powder for a Parmesan-like crust without the sodium.
  • Try a Mediterranean variation using artichoke hearts (packed in water, drained), kalamata olives (rinse well to reduce sodium), and roasted red peppers instead of the standard vegetables. Add 1 teaspoon of dried oregano and a pinch of red pepper flakes, then finish with a sprinkle of feta cheese crumbles if your sodium allowance permits.
  • For a creamy mushroom version, double the mushrooms and use a variety like shiitake, oyster, and cremini. Add 1 teaspoon of truffle oil at the end for luxury flavor, and use wild rice instead of pasta for a different texture that pairs beautifully with the earthy mushrooms.
  • Make it seafood-friendly by substituting the chicken with 1½ pounds of raw shrimp or chunks of firm white fish like cod or halibut. Add Old Bay seasoning without salt instead of paprika, and include corn and diced potatoes for a New England-inspired chowder casserole that’s comfort food at its finest.

Frequently Asked Questions

Can I make this casserole ahead of time and freeze it?

Absolutely! This low-sodium chicken casserole freezes beautifully, making it perfect for meal prep. Assemble the casserole completely through step 4 (before baking), but wait to add the breadcrumb topping. Cover tightly with plastic wrap followed by aluminum foil, label with the date, and freeze for up to 3 months. When ready to bake, thaw overnight in the refrigerator, add the breadcrumb topping, and bake as directed, though you may need to add 10-15 minutes to the cooking time since it’s starting from cold. The texture might be slightly softer after freezing, but the flavors actually improve as they meld together. I don’t recommend freezing after baking as the pasta can become mushy upon reheating.

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What can I use instead of Greek yogurt to keep it dairy-free?

Great question! For a dairy-free version that maintains creaminess without sodium, you have several excellent options. Cashew cream works wonderfully—soak 1 cup of raw cashews in hot water for 30 minutes, then drain and blend with ¾ cup of water until completely smooth. Silken tofu blended until creamy is another fantastic substitute that adds protein without altering the flavor profile. Coconut cream can work too, though it will impart a slight coconut flavor that pairs better with certain variations like the Mexican version. Whatever substitute you choose, add it at the same step as the Greek yogurt and whisk until fully incorporated into the sauce.

How can I tell if the casserole is done without overcooking the chicken?

The best way to ensure perfect doneness without dry chicken is to use an instant-read thermometer inserted into the center of the casserole—it should read 165°F. Additionally, check that the pasta is tender by sampling a piece from the edge (be careful, it’s hot!). The top should be golden brown and crispy, and the edges should be bubbling actively. Since the chicken is already cooked before baking, the second bake primarily cooks the pasta and melds the flavors, so you’re not actually cooking the chicken further—just warming it through. If you’re concerned about dryness, you can slightly undercook the chicken during the initial browning step since it will continue cooking in the oven.

Can I use different types of pasta in this recipe?

You bet! While elbow pasta works great, many other shapes will work beautifully in this casserole. Penne, rigatoni, or farfalle hold up well to baking and capture the creamy sauce in their nooks and crannies. If using larger pasta like rigatoni, you might need to increase the initial covered baking time by 5-10 minutes. Whole wheat, gluten-free, or legume-based pastas all work, though cooking times may vary slightly—check the package instructions and adjust accordingly. Avoid very delicate pasta like angel hair or orzo, as they can become mushy during the baking process. The key is to choose a pasta shape that can stand up to baking while still absorbing the flavorful sauce.

Is this recipe suitable for people on strict low-sodium diets?

This recipe is specifically designed to be low-sodium, but always check with your healthcare provider about your specific dietary needs. Using homemade low-sodium broth, no-salt-added ingredients, and avoiding processed items keeps the sodium content minimal. The estimated sodium per serving is less than 150mg, primarily from natural sources in the ingredients. For even stricter diets, you can omit the optional Parmesan cheese and ensure all your ingredients are certified low-sodium. Remember that many herbs, spices, and acid-based flavor enhancers like lemon juice are sodium-free ways to boost flavor dramatically without compromising your health goals.

Summary

This heart-healthy low-sodium chicken casserole delivers incredible flavor without compromising your dietary needs, featuring tender chicken, wholesome vegetables, and a creamy sauce that’ll make you forget it’s good for you.

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