Brown sausage loosely, saute diced green & red peppers & onion, set aside. Brown potatoes, set aside.
Take a 9x13x2 pan & spray with Pam cooking spray. Layer sausage, peppers, onion, potatoes. On top of potatoes, add sliced butter. Spread cheese on top. In a bowl, whisk eggs until well mixed. Pour eggs over mixture.
Bake at 350°F for 40 min. Test with cake tester, should come out clean.