Pierogies

Pierogies are Polish dumplings which can be filled with a variety of things but in our house, it's always potatoes. I used Mom Mom D's recipe:
DOUGH
2 ½ CUPS FLOUR
1 Egg
SALT
¾ CUP MILK

FILLING
4 LARGE POTATOES, PEELED AND CUT UP
1 MEDIUM ONION, DICED AND SAUTEED
1 LB COTTAGE CHEESE
3 OZ CREAM CHEESE

To make the filling, I boiled the potatoes and then combined them in the Kitchen Aid with the sauteed onions, cottage cheese and cream cheese. I actually made double the filling, but it was way too much! I made the dough in the food processor and then rolled it out to about 1/4 inch thick. Then I used a glass to cut out small circles. I rolled these out further so the dough was as thin as possible but could still hold up after being filled. I filled each dough round with a heaping spoonful of filling. I made a "paste" of flour and milk and spread it around the edges of the dough and then folded into a dumpling like this:
To cook the pierogies, I first boil them in salted water and then pan fry them in butter and onions. Today, I had intended to make these pierogies for lunch, but I got busy and made them later. So, I just boiled them and froze them to cook another day.SUNDAY UPDATE (as requested by Kelly): Since I made too much filling, I decided to make some of it into potato pancakes for dinner. I simply formed the filling into a pancake and dipped in a little bit of beaten egg to help hold it together and cooked in some butter. Yum!