Crustless Spinach, Mushroom, and Tomato Quiche (Keto)

Step 1
Preheat the oven to 375 degrees F (190 degrees C). Grease a 9-inch pie plate with cooking spray.

Step 2
Melt butter in a medium cast iron skillet over medium heat. Add onion; cook and stir until softened and translucent, about 5 minutes. Stir in cherry tomatoes until slightly softened, about 3 minutes. Add mushrooms and cook until tender, about 3 minutes. Mix in spinach; cook for 1 minute more.

Step 3
Whisk cream, eggs, salt, pepper, and nutmeg together in a bowl.

Step 4
Spread 1/2 of the Gouda cheese in the prepared pie plate and top with spinach mixture. Cover with egg mixture and sprinkle remaining Gouda cheese on top.

Step 5
Bake in the preheated oven until eggs are set and top is golden, about 25 minutes.