Preheat oven to 350°
In a large skillet, cook sausage over medium heat until no longer pink; drain.
In a large bowl, beat eggs.
Add onion, green pepper, salt, garlic powder and pepper.
Stir in sausage and cheese.
Spoon by ⅓ cupfuls into muffin cups coated with cooking spray.
Bake 20-25 minutes or until a knife inserted in the center comes out clean.