Preheat the oven to 400°F.

Steam cauliflower for about 10-12 minutes or until very tender, then transfer to a food processor. Add minced garlic and pulse several times until smooth and creamy.

Transfer mashed cauliflower into a large mixing bowl. Add in two whole eggs, cheddar cheese, nonfat Greek yogurt, salt and pepper and mix together.

In a separate bowl, beat egg whites until stiff. Then, slowly fold the egg whites into the cauliflower mixture.

Coat a mini muffin pan with cooking spray of your choice. Then fill the cups to the top with the cauliflower mixture. Bake for 20-25 minutes, until golden brown.

Remove from the pan, and set on a cooling rack.