A slow cooker potato and onion bake is a simple, cozy side dish—soft, buttery potatoes layered with sweet, mellow onions, cooked low and slow until tender and slightly caramelized.
Ingredients
- 4–6 medium potatoes (thinly sliced)
- 2 large onions (thinly sliced)
- 3 tbsp butter (or olive oil)
- 1 tsp salt (adjust to taste)
- ½ tsp black pepper
- ½ tsp paprika (optional, for color)
- 1 tsp dried thyme or rosemary (optional)
- ½ cup milk or cream (optional, for a creamy version)
- 1–2 cloves garlic (optional, minced)
Method
1. Prep the vegetables
Peel (optional) and thinly slice potatoes and onions. Thin slices cook more evenly and give a better layered texture.
2. Layer in the slow cooker
Lightly grease the slow cooker.
Start with a layer of potatoes, then onions, and repeat until everything is used.
Sprinkle salt, pepper, and herbs between layers. Dot butter throughout.
3. Add moisture
- For a classic bake: add a few tablespoons of water or stock.
- For a creamy bake: pour milk or cream evenly over the top.
4. Cook
- Low: 6–8 hours
- High: 3–4 hours
Avoid opening the lid too often—this releases heat and slows cooking.
5. Finish
Stir gently before serving. If you want a slightly browned top, transfer to an oven dish and broil for 5–10 minutes.
Tips
- Yukon Gold potatoes give a creamy texture; Russets make it softer and fluffier.
- Add cheese in the last 30 minutes for a richer version.
- A pinch of chili flakes can balance the sweetness of onions nicely.
If you want, I can turn this into a cheesy gratin version, a Vegan version, or a full slow cooker meal with meat added.
