Instant Pot® Spicy Chicken Spaghetti Casserole with Frozen Chicken Breasts

Cook frozen chicken breasts without defrosting them in your Instant Pot® and make this comforting casserole dish with spaghetti, Cheddar cheese, and cream of mushroom soup.

• Preparation Time: 10 mins
• Cooking Time: 55 mins
• Total Time: 1 hr 5 mins
• Calories: 375 Calories

Ingredients

• 1 tablespoon butter
• 2 cups shredded Cheddar cheese
• nonstick cooking spray
• 1 (10 ounce) can diced tomatoes and green chiles (such as RO*TEL®)
• 1 teaspoon taco seasoning mix
• 2 (6 ounce) frozen chicken breasts
• 10 ounces spaghetti, broken in half
• 1 (10.5 ounce) can low-sodium cream of mushroom soup
• 1 (10.5 ounce) can low-sodium cream of chicken soup
• 0.5 cup milk
• 0.5 cup chopped onion
• 0.5 teaspoon chicken seasoning salt (such as Chook®)

Recipe Instructions

Step 1

Turn on a multi-functional pressure cooker (such as Instant Pot®) and select Saute function. Add in butter and onion and saute for about 3 minutes. Pour in diced tomatoes with liquid; mix to combine. Add frozen chicken breasts. Cancel Saute mode.

Step 2

Transfer 1/2 of the spaghetti mixture to the casserole dish and sprinkle with 1/2 cup cheese. Add remaining spaghetti mixture and sprinkle with remaining 1 1/2 cups cheese.

Step 3

Broil in the preheated oven until the cheese is bubbling and golden, 3 to 5 minutes.

Step 4

Close and lock the lid. Select High pressure according to manufacturer's instructions; set timer for 20 minutes. Allow 10 to 15 minutes for pressure to build.

Step 5

Release pressure carefully using the quick-release method according to manufacturer's instructions, about 5 minutes. Unlock and remove the lid. Remove chicken and cut into bite-sized pieces. Add chicken back into the pot. Scatter noodles on top so they don't clump up.

Step 6

Mix mushroom soup, chicken soup, and milk together in a bowl. Pour over noodles. Close and lock the lid. Select High pressure according to manufacturer's instructions; set timer for 7 minutes. Allow 10 to 15 minutes for pressure to build.

Step 7

Release pressure carefully using the quick-release method according to manufacturer's instructions, about 5 minutes. Unlock and remove the lid. Stir in taco seasoning and chicken seasoning salt.

Step 8

Set an oven rack about 6 inches from the heat source and preheat the oven's broiler. Spray an 8x12-inch casserole dish with cooking spray.