Creating the delicious Crockpot Pierogi Casserole with Kielbasa is simple if you follow these straightforward steps:

1. Prepare the Crockpot: Lightly grease your crockpot with cooking spray or a little olive oil for easier cleanup.
2. Layer Ingredients: Start by placing half of the frozen pierogi in the bottom of the crockpot.
3. Add Kielbasa: Scatter half of the chopped kielbasa over the pierogi layer.
4. Onions and Sauerkraut: Add the diced onion evenly over the kielbasa, then layer the sauerkraut on top.
5. Cheese: Sprinkle half of the shredded cheddar cheese over the sauerkraut.
6. Seasonings: In a small bowl, mix the garlic powder, onion powder, salt, and pepper. Sprinkle this mixture over the layers.
7. Add Remaining Ingredients: Repeat the layers with the remaining pierogi, kielbasa, onions, sauerkraut, and cheese. Top with any remaining seasoning mixture.
8. Pour Chicken Broth: Finally, pour the chicken broth evenly over the entire mixture.
9. Cover and Cook: Cover the crockpot and cook on low for 6-8 hours or high for 3-4 hours, until everything is heated through and the flavors meld together.
10. Final Touch: When done, gently stir to combine all layers. Adjust seasoning if necessary before serving.