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Caramelized Onion, Mushroom and Gruyere Quiche with Oat Crust

Ellie Krieger
  • 125 minutes
  • Serves 6

INGREDIENTS

8 oz

Mushrooms, mixed

1

Onion, large

1 tbsp

Thyme, fresh

3

Egg whites

3

Eggs, large

3/4 cup

Rolled oats

1/4 tsp

Mustard, dry

1/2 cup

All-purpose flour

1/4 tsp

Black pepper, freshly ground

3/4 tsp

Salt

1

Cooking spray, Nonstick

4 tsp

Olive oil

3 tbsp

Butter, unsalted

3 tbsp

Buttermilk, low-fat

2/3 cup

Gruyere cheese, grated

1 cup

Milk, fat-free