Preheat oven to 350F and grease a 9x13 pan.
If using meats, pre cook in a skillet skillet and chop into bite-sized pieces.
Cook any raw vegetables lightly in remaining meat grease.
Dump meats and veggies into pan with bread. Toss to combine.
Lightly whisk eggs with dairy until yolks and whites are combined. Season to taste.
Pour egg mixture over other ingredients and top with cheese.
Bake for 30-45 minutes until cheese is melted and a cake tester comes out clean.
Note: this is the perfect way to use up leftovers. You can't go wrong!