Prepare the Ingredients: Start by dicing cooked chicken and slicing the mushrooms and bell pepper. Have the frozen peas and carrots ready to go as well.
Sauté the Vegetables: In a large skillet, melt the butter over medium heat. Add the diced bell pepper and sliced mushrooms, sautéing until they’re tender (about 3-4 minutes).
Make the Roux: Sprinkle the flour over the vegetables in the skillet. Stir well, cooking for about 1 to 2 minutes—this will create a roux for your sauce.
Add the Liquids: Gradually whisk in the chicken broth, ensuring there are no lumps. Once well combined, add the heavy cream, cooking until the mixture thickens (approximately 5 minutes).
Combine Ingredients: Add the diced chicken and frozen peas and carrots to the skillet. Stir in garlic powder, onion powder, salt, and pepper, allowing everything to heat through (around 3-4 minutes).
Serve: Serve the creamy mixture over rice or pasta, and enjoy the warmth and comfort of this delightful dish!