Mushroom, Caramelized Onion, Spinach, Swiss Quiche | Just A Pinch Recipes

Ingredients

• 1 9” pie crust (i usually make my own from scratch)
• 1 large sweet onion, thinly sliced
• 2 tablespoon(s) butter
• 15-20 baby bella mushrooms, thin sliced
• 1 teaspoon(s) fresh thyme leaves
• handful baby spinach leaves
• 5 large eggs
• 1 cup(s) half-and-half or cream
• 1 cup(s) grated cheddar cheese
• 6 swiss cheese slices
• To taste salt and pepper