Pierogi Casserole Recipe: How to Make It

Ingredients

• 1 cup finely chopped onion
• 1/4 cup butter, cubed
• 2 cups 4% cottage cheese, drained
• 1 large egg
• 1/4 teaspoon onion salt
• 2 cups mashed potatoes (with added milk and butter)
• 1 cup shredded cheddar cheese, divided
• 1/4 teaspoon salt
• 1/8 teaspoon pepper
• 9 lasagna noodles, cooked and drained
• Optional: sour cream and chopped chives