Rotel chicken spaghetti bake combines tender chicken, spaghetti, and spicy Rotel tomatoes in a creamy, cheesy family casserole. This protein-packed Southern potluck staple is bold, comforting, and feeds a crowd.
Preheat the oven to 375°F. Grease a 9x13 inch baking dish lightly with olive oil.
Cook the spaghetti in boiling salted water until just al dente, then drain well to prevent excess moisture.
In a large saucepan set over medium heat, sauté chopped onion and bell pepper in olive oil for 4-5 minutes until softened.
Add Rotel tomatoes, cream cheese, garlic powder, salt, and pepper to the saucepan, stirring steadily over medium heat until the cream cheese melts and the sauce is creamy.
Gently fold in the cooked chicken and drained spaghetti, mixing well to coat everything evenly with sauce.
Transfer the mixture into the prepared baking dish and sprinkle the shredded cheddar cheese evenly over the top.
Bake uncovered for 20-25 minutes, or until bubbly and the cheese is golden. Let rest for 10 minutes before serving to allow the casserole to set.