Jalapeno Popper Chicken Casserole

Jalapeno Popper Chicken Casserole
2 boneless, skinless chicken breasts, cut in bite-sized pieces
4 T butter, divided
salt and pepper, to taste

1 onion, diced
5 slices bacon, chopped
2 jalapenos, seeded and sliced
1/2 c mayonnaise
8 oz cream cheese, softened

1 c Cheddar cheese
1 c Parmesan cheese

1. Preheat oven to 400*.
2. Spread 3 tablespoons butter on the bottom of an 8x8 pan and sprinkle with chicken; season with salt and pepper and bake for 20 minutes, until chicken is cooked through; set aside.
3. Meanwhile, saute onion in remaining butter until softened; add bacon and jalapenos, and cook until bacon is browned; set aside.
4. In a medium bowl, combine mayonnaise and cheeses; stir in jalapeno mixture.
5. Combine jalapeno mixture with chicken and bake for another 15 minutes, until golden brown.