Equipment
Ingredients
Egg Base
- 6 eggs, room temperature
- 60 ml whole milk
- 3 g salt
- 1 g black pepper, freshly cracked
Filling
- 200 g cremini mushrooms, sliced
- 15 ml olive oil
- 15 g unsalted butter
- 100 g gruyere cheese, grated
Nutrition (per serving)
Method
Preheat the oven grill or broiler to high heat.
In a mixing bowl, vigorously whisk the eggs, whole milk, salt, and black pepper until frothy and completely uniform.
Heat the olive oil and butter in an oven-safe skillet over medium-high heat. Add the sliced mushrooms and saute until deeply browned and all their moisture has evaporated, about 5 to 7 minutes.
Reduce the heat to medium-low. Pour the egg mixture over the mushrooms in the skillet. Using a spatula, gently pull the edges toward the center as they set, tilting the pan to let the uncooked egg flow underneath. Cook undisturbed for 3 to 4 minutes until the bottom is set but the top is still runny.
Sprinkle the grated gruyere cheese evenly over the top of the semi-set eggs.
Transfer the skillet to the oven under the grill. Broil for 2 to 3 minutes until the eggs are completely set, reaching a safe internal temperature of 74°C or 165°F, and the cheese is melted, bubbling, and golden brown.
Remove the skillet from the oven and let the frittata rest for 5 minutes before slicing. This allows the residual heat to finish cooking the center gently and ensures clean slicing.
Chef's Notes
- For the fluffiest texture, whisk the eggs vigorously just before pouring them into the pan to retain the incorporated air bubbles.
- Ensure the mushrooms are cooked down completely until deeply browned. Any residual moisture left in the pan will water down the eggs and ruin the dense, creamy texture of a proper frittata.
- Gruyere provides excellent melting qualities and a complex nutty flavor, but mature cheddar or fontina make excellent substitutes depending on what is in your refrigerator.
- Always use a pan that you know is reliably non-stick or well-seasoned, as eggs are notoriously difficult to release from poorly maintained surfaces.
Storage
Refrigerator: 3 days — Store in an airtight container. Texture may become slightly denser upon refrigeration.
Reheating: Microwave gently on medium power in 30-second bursts, or warm in a 150°C oven until heated through.
