Miniature Potato Knishes

Makes about 42 miniature knishes

These are just yummy for your tummy!

3 cups mashed potatoes (about
    2 very large potatoes)
2 eggs, slightly beaten
1 large onion, diced
2 tablespoons margarine
1 teaspoon salt (or to taste)
1/8 teaspoon black pepper
3/8 cup Matzoh meal
1 egg yolk, beaten with 1 tablespoon water

Preheat oven to 400 degrees F.

Saut