This frittata can be made ahead and re-heated for quick breakfasts or to take along for lunch. Add ham or bacon if desired. Photo and Recipe courtesy of Foodland Ontario, foodlandontario.ca. Preparation Time:Â 20 minutes Baking Time:Â 40 minutes Makes 8 servings 1 pkg (227 g) sliced Ontario mushrooms 1-3/4 cups (425 mL) halved...