Polish Cheese Pierogi

Ingredients:

Dough
1 cups mashed potatoes at room temperature
3 eggs at room temperature
2 1/2 cups flour

Filling
1 quart farmer's cheese or cottage cheese (see step 1 below of using cottage cheese)
1/2 teaspoon salt
2 egg yolks at room temperature
1/4 cup sugar
2 large or 3 medium onions, chopped
1 cup butter

Cooking Directions
If you can't find farmer's cheese you can use cottage cheese, but drain it overnight. Place the cottage cheese in a strainer or colander liner with cheesecloth. Cover and refrigerate overnight or longer to separate the liquid from these cheese. Even with draining it, your filling might be a little to loose and liquidy. If you find this to be true, add a little bit of instant mashed potatoes to the cheese mixture to stiffen up the filling a bit.

Prepare the filling by puree all the filling ingredients together. Set aside.

Prepare the onions by melting half the butter over medium high high in a large skillet. As soon as the butter melts, add the onions. Cook until the onions are just barely golden brown. Melt the remaining butter in the pan with the onions. Set aside and keep warm.

Courtesy of FabulousFoods.com