Slow Cooker Cheesy Chicken Penne

The slow cooker is the best method for making this casserole for many reasons. It cooks the chicken breast until juicy and tender. It also allows all of the flavors time to develop and come together, and it’s easy to assemble! Just layer onions, seasoned chicken, and a mix of soups in the cooker, then set it and forget it until it's time to shred the chicken, stir in sour cream and cheese, and combine with cooked penne. You'll finish with a sprinkle of cheese for a golden top, and that’s it!

Cheesy chicken penne pasta pairs well with a crisp green salad or steamed veggies for a touch of freshness and a slice of crusty bread to sop up the creamy sauce. It’s easily adaptable and a great way to feed a family when you don’t have a ton of time! 

Why This Recipe Is Great For An Easy Dinner

• With prep time that's less than 5 minutes, you can toss the ingredients into the slow cooker and let it do the work, freeing you up for other tasks.
• This chicken penne casserole with cheese requires no constant attention—simply set the timer, and you're guaranteed a savory, cheesy dish with little effort.
• It’s a one-pot dinner, meaning you won’t be left with a mountain of dishes, just one slow cooker to clean. 
• The recipe delivers a filling, protein-packed meal that satisfies hunger, perfect for those evenings when time is scarce but appetites are large.

Ingredients You’ll Need

• Yellow Onion - Provides a flavor base that infuses the dish with a subtle sweetness when slow-cooked with the chicken.
• Chicken Breast - Acts as the protein-rich centerpiece of the casserole, absorbing the flavors.
• Seasonings (salt, pepper, paprika, dried thyme, Italian seasoning) - These seasonings work together to enhance the natural flavors of the chicken and create a warm, aromatic taste.
• Low Sodium Chicken Broth - Adds moisture and a rich, savory chicken flavor that helps to tenderize the chicken during the slow cooking process.
• Cream of Chicken & Mushroom Soup - Gives the dish a creamy texture and reinforces the poultry flavor, acting as a thickening agent for the casserole's sauce.
• Sour Cream - Provides a tangy creaminess that balances the richness of the soups and cheese, contributing to a more velvety sauce.
• Shredded Cheddar - Melts into the casserole, offering a gooey, cheesy consistency and a sharp, deep flavor.
• Penne Pasta - Serves as the hearty starch that soaks up the creamy sauce, adding texture and substance to make the casserole a complete meal.

How To Make Cheesy Chicken Penne in a Slow Cooker

Add the onion layer: Dice the onion into medium squares. Layer at the bottom of a 6-quart slow cooker.

Prepare the chicken breast: Trim any excess fat from the chicken breast. Pat dry with paper towels. Season both sides of the chicken breast with salt, black pepper, paprika, Italian seasoning, and thyme. Place on top of the onions in the slow cooker.

Mix the canned soup: In a medium-sized mixing bowl, add the chicken broth and canned soup. Mix until both are combined with each other, then pour over the top of the chicken and onion mixture. 

Cover and cook: Add the lid to the top of the crock pot. Cook on HIGH for 2½-3½ hours or LOW for 5-6 hours.

Cook pasta: 20 minutes before the cooking time is up, cook pasta to al dente per directions on the package. Drain and set aside.

Shred the chicken: Use tongs to remove the chicken breast from the crock pot. Shred on a cutting board with two forks, then add back into the crock pot. 

Assemble the dish: To the crock pot, add the sour cream and 2 cups of the shredded cheddar, then mix until combined before stirring in the cooked pasta until each piece is well coated. Top with the remaining cheddar and place the lid back on top until the cheddar melts. Scoop into bowls and serve while hot. Enjoy! 

Recipe Tips

• If you have time, sauté the diced onions before adding them to the slow cooker to enhance their sweetness and add a caramelized flavor.
• For an even creamier texture, mix in a splash of milk or cream when adding the sour cream and cheese.
• If you prefer a bit of crunch, top the finished casserole with breadcrumbs and broil in an oven-safe dish for a few minutes until golden.
• You can use a meat shredder or a stand mixer with a paddle attachment to shred the meat instead of doing it with two forks.
• Prevent overcooked pasta by boiling it until just al dente since it will continue to soften in the hot cheese sauce.
• Reserve some shredded cheese to sprinkle on top just before serving for an extra gooey layer right on top that rounds out the dish. 

Variations

• Swap out the penne for whole wheat or gluten-free pasta to cater to dietary preferences or to add a bit more fiber to the dish.
• Add a pop of color and nutrition by stirring in spinach or kale during the last 30 minutes of cooking.
• For a smoky twist, use smoked paprika instead of regular paprika, or add a bit of liquid smoke to the recipe.
• Replace the chicken breast with boneless, skinless chicken thighs if you prefer meat that's more tender and rich in flavor.
• Stir in sautéed mushrooms or bell peppers for an extra layer of veggies and an enhanced savory profile.
• Give the dish a Mexican flair by adding taco seasoning to the chicken and a blend of Monterey Jack and cheddar cheeses.
• For a lighter version, use Greek yogurt in place of sour cream and low-fat cheese to cut down on calories without losing creaminess.
• Create a crunchy topping by mixing panko breadcrumbs with grated Parmesan cheese and sprinkle over the casserole before the final cheese melt.

Storing & Freezing

Storing: Allow the casserole to cool to room temperature, then transfer it to an airtight container and refrigerate for up to 3-4 days. When reheating, add a splash of chicken broth or milk to loosen the sauce, as it may thicken in the fridge.

Freezing: To freeze, spoon the cooled casserole into freezer-safe containers or zip-top bags, leaving a small space at the top as the sauce will expand when frozen. It can be frozen for up to 2-3 months. Thaw overnight in the refrigerator before reheating, and then warm it in the oven or microwave until heated through.

Recipe FAQs

More Slow Cooker Casserole Dishes

• Crock Pot Breakfast Casserole
• Crock Pot Chicken Enchilada Casserole
• Slow Cooker Chicken Casserole with Ritz Crackers
• Crock Pot Taco Casserole

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