Preheat oven to 350.
Spray an 8 x 8 baking dish with cooking spray.
Set aside ⅓ cup of the shredded cheese to use as a topping.
Stir together the remaining ingredients.
Spread in the prepared baking dish.
Sprinkle with the reserved cheese.
Bake for 40-45 minutes, until the casserole is golden and bubbly.
