Cheezy Onion Puffs

1 box (17-1/4 oz) frozen puff pastry sheets, thawed (2 unbaked sheets)
1 container (16 oz) Ricotta cheese
2 cups grated cheddar cheese
1 medium onion, finely chopped
2 eggs, lightly beaten
1/2 teaspoon salt
2 dashes cayenne pepper

Preheat oven to 375. Place 1 sheet of puff pastry on a 10x15 inch cookie sheet. Mix remaining ingredients together in a bowl. Spread cheese, onion mixture on top of pastry. Top with remaining pastry sheet. Bake for 40 to 45 minutes or until golden. Cut into squares and serve hot.

Note: for even lighter puffs, you can use lowfat ricotta or lowfat cheddar cheese. You can also cut down on the salt and add your favorite flavorings or fresh herbs.