Bake garlic bread according to package directions. Meanwhile, in a large skillet, saute onion and green pepper in butter until crisp-tender. In a large bowl, whisk the eggs, milk, salt and pepper. Pour into skillet; cook and stir over medium heat until eggs are completely set. Remove from the heat and keep warm.
Arrange cheese slices on bottom half of bread; spoon eggs over cheese. Replace bread top. Slice and serve immediately. Yield: 6 servings.