the pierogi are tender and heated all the way through. Avoid lifting the lid too often so you don’t lose heat and add extra time.
Once the pierogi are tender, sprinkle the shredded cheddar cheese evenly over the top. Cover again and cook on LOW for an additional 10 to 15 minutes, just until the cheese is fully melted and gooey.
Gently stir from the edges toward the center to coat the pierogi in the buttery onions and melted cheese, being careful
