Spinach and Feta Egg White Cups with Potatoes and Mushrooms

INGREDIENTS

1 1/2 cups

Liquid Egg Whites (or the whites of 8-9 eggs)

15 oz

can Diced Potatoes (drained)

1/2 cup

Chopped Spinach (canned or thawed from frozen and drained)

1 1/2 cups

White Mushrooms (roughly chopped)

1/2 cup

Crumbled Feta Cheese

1/8 tsp

Salt and Pepper

1/8 tsp

Cayenne Pepper (to taste (optional))