How to Make Fabulous Potato and Cheese Pierogi

Ingredients

• 4 cups flour
• 1 cup warm water
• 2 teaspoons vegetable oil
• 2 eggs
• 2 teaspoons salt
• 2 cups potatoes (cooked & mashed)
• 1/2 tablespoon onion (chopped fine (equals one and a half teaspoons))
• salt & pepper to taste
• 2 cups cheddar cheese (strong, shredded)
• 4 ounces butter
• 1 onion (thinly sliced)
• sour cream
• bacon (chopped into small pieces and fried until crisp (optional))