04Assemble: Sprinkle the bacon, then onion, and then the cheeses on top of the crust, saving 1 chopped slice of bacon for the top garnish. Pour the egg mixture slowly into the shell to the rim. Sprinkle the reserved bacon on top of the quiche.05Cover with foil and bake for 35 minutes. Then remove the foil and finish baking for 10 minutes. Cool on wire rack. Serve warm or at room temperature.