When ready to bake, preheat oven to 350 degrees F. Remove casserole from fridge and top with bell peppers. Grate a little more black pepper over the top of the egg mixture. Bake 45 minutes or until firm and crispy brown at edges. Remove from the oven and let cool at least 5 minutes before cutting. Serve hot, warm, at room temperature, or cold. Reheats well in the microwave or in hot oiled skillet, covered.