This Crock Pot Pierogi and Kielbasa Casserole is a hearty and comforting dish that combines the flavors of pierogies, kielbasa, and cheese. The pierogies are cooked until tender and then layered with sliced kielbasa and a creamy cheese sauce. The casserole is then slow-cooked in a crock pot, allowing the flavors to meld together and creating a deliciously satisfying meal. Serve this casserole with a side of sauerkraut or a green salad for a complete and filling dinner.