"Get this all-star, easy-to-follow Caramelized Onion, Mushroom and Gruyere Quiche with Oat Crust recipe from Ellie Krieger..."
INGREDIENTS
•
Cooking spray
•
3/4 cup rolled oats
•
1/2 cup all-purpose flour
•
1/4 teaspoon salt
•
3 tablespoons cold, unsalted butter, cut into small pieces
•
3 tablespoons cold, lowfat buttermilk
•
4 teaspoons olive oil
•
1 large onion, sliced thinly into half moons
•
8 ounces sliced mixed mushrooms, such as cremini, oyster, shiitake
•
1/2 teaspoon salt
•
1/4 teaspoon freshly ground black pepper
•
1/4 teaspoon dry mustard
•
1 tablespoon chopped fresh thyme leaves (or 1 teaspoon dry)
•
3 large eggs
•
3 egg whites
•
1 cup evaporated fat-free milk (not condensed milk)
•
2/3 cup grated Gruyere cheese (about 1-ounce)