Slow cooker pierogies

Here's a recipe stolen from Food.com, but for 2, and my way. It's very simple!

Slow cooker pierogies

Ingredients (serves 2 generously):

16 potato and cheese mini pierogies
1/3 of a white onion
3 tbsp butter

1. Place pierogies in slow cooker on high.
2. Dice white onion, and melt butter. Then add to the slow cooker.
3. Cook on high for 3 hours, flipping and mixing the melted better to be on top occasionally.