01 -
Preheat oven to 175°C. Lightly grease a large casserole dish with oil or non-stick spray.
02 -
Place chicken breasts in a large pot over medium heat and cook for 6–7 minutes per side until golden brown and thoroughly cooked. Remove from heat and shred once cool enough to handle.
03 -
In a separate pot, bring salted water to a boil. Add spaghetti and cook for 8–10 minutes until al dente. Drain well and set aside.
04 -
In a large bowl, mix shredded chicken, cooked spaghetti, cream of chicken soup, chopped bell peppers, paprika, cayenne pepper, garlic powder, and half of the shredded cheddar cheese until thoroughly incorporated.
05 -
Pour the mixture into the prepared casserole dish and smooth into an even layer. Sprinkle remaining cheddar cheese evenly over the top. Bake for 25–30 minutes until the surface is bubbling and golden.
06 -
Remove casserole from oven and let rest for 5 minutes. Garnish with sliced green onions before serving.