Pierogi (Potato and Mushroom Sauerkraut) Recipe | Epicurious

Ingredients

• 1/4 cup canola oil
• 2 pounds sweet onions (Vidalia or Walla Walla), diced medium
• 1 1/2 pounds Yukon Gold potatoes, peeled and sliced, cut into 3/4-inch chunks
• 1 small onion, finely chopped
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 4 tablespoons nonhydrogenated margarine (or 1/4 cup canola oil and 1/4 teaspoon salt)
• 10 ounces mushrooms, sliced (about 3 cups)
• 2 cups sauerkraut
• 1/4 teaspoon pepper
• 1 cup warm water
• 3 tablespoons canola oil
• 3 cups all-purpose flour, divided, plus a little extra for sprinkling
• 3/4 teaspoon salt
• Applesauce