1 teaspoon unsalted butter, or as needed
2 eaches skinless, boneless chicken breasts, cubed
3 cups finely chopped broccoli
2 (10.5 ounces) cans condensed cream of chicken soup
1 cup shredded Cheddar cheese
1 cup shredded Parmesan cheese, divided
½ cup shredded mozzarella cheese
½ cup sour cream
ground black pepper to taste
Step 1: Prepare the oven and preheat to 175 degrees C or 350 degrees F.
Step 2: Brush melted butter on the sides and bottom of a 9×13-inch baking dish.
Step 3: Place a large pot on the stove and turn the heat to high.
Step 4: Pour in water and allow it to boil.
Step 5: Add in the chicken and cook for 5 to 10 minutes or until cooked through.
Step 6: In a large mixing bowl, add in the cream of chicken soup, broccoli, 1/2 cup parmesan cheese, mozzarella cheese, Cheddar cheese, sour cream, and pepper. Stir until well combined.
Step 7: Remove the chicken from the pot and drain the excess water. Add into the broccoli mixture. Stir until well mixed.
Step 8: Transfer the mixture into the buttered baking dish and spread evenly.
Step 9: Place inside the preheated oven and bake for 20 minutes and sprinkle the rest of the Parmesan cheese on top. Bake for another 5 minutes or until the cheese is melted completely.
Step 10: Remove from the oven and let it sit at room temperature to cool.
Step 11: Serve and enjoy!