In a medium skillet , heat olive oil over medium high heat. Add mushrooms and cook until tender, drain. Set aside.
Preheat oven to 350F degree. Lightly grease the muffin pan with oil spray or use paper muffin cups.
Beat eggs in a large bowl. Add mushrooms, fresh veggies, salt, pepper, garlic powder, sausage and cheese.
Spoon the mixture into muffin cups.
Bake for about 20 minutes or until a tooth pick inserted near the center comes out clean.