1 Small Head Cauliflower, Cut Into Florets
1/2 cup Shredded Mozzarella Cheese
1/4 teaspoon Onion Powder
1/4 teaspoon Ground Black Pepper
1/2 cup Shredded Sharp Cheddar Cheese
1 Tablespoon Butter, Divided
Preheat oven to 425 degrees F. Line a baking sheet with parchment paper and coat with cooking spray.
In a food processor, place the cauliflower and pulse just until finely chopped. Place in a medium microwaveable bowl and microwave 8 to 9 minutes, or until soft. Place cauliflower in a strainer and press down hard with a paper towel to squeeze out water.
Place cauliflower in a large bowl. Add mozzarella cheese, egg , onion powder, salt, and pepper; mix well. Spread mixture on baking sheet and shape into four 4-inch squares.
Bake 15 to 20 minutes, or until golden. Let cool 10 minutes, then gently remove from parchment paper to a flat surface. Evenly sprinkle Cheddar cheese on 2 cauliflower squares and top with remaining squares.
In a large skillet over medium-low heat, melt 1 teaspoon margarine. Place cauliflower sandwiches in skillet and spread remaining margarine on top side. Cook 2 to 4 minutes, or until golden brown; gently flip over and cook another 2 to 4 minutes, or until cheese is melted.