The “Family Favorite” Slow Cooker Buttered Onion Potatoes
“Put potato chunks, butter, and sliced onions in the slow cooker and get a meal so delicious your family will be begging for more.”
There is a unique magic that happens when potatoes are slow-cooked in a bath of butter and aromatics. Instead of the high-heat crisping of an oven, the slow cooker allows the butter to deeply penetrate each potato chunk, while the onions soften into a sweet, jam-like consistency. It is the perfect side dish for a Sunday roast or a hearty weeknight main.
Why This Recipe Works
- Effortless Prep: No boiling or constant monitoring required—just chop, toss, and let the slow cooker do the heavy lifting.
- Deep Infusion: The long, slow cooking process ensures the garlic and onion flavors are infused into every bite.
- Textural Bliss: The potatoes become incredibly tender, almost melting in your mouth, while the onions provide a silky contrast.
Ingredients
| Item | Quantity | Role |
| Potatoes | 3–4 lbs (cubed) | Large chunks hold their shape best. |
| White or Yellow Onion | 1 large (sliced) | For sweetness and savory depth. |
| Unsalted Butter | 1/2 cup (sliced into pats) | The secret to the rich, velvety finish. |
| Garlic Powder | 1 tsp | For an essential savory kick. |
| Salt & Black Pepper | To taste | Essential for bringing out the potato’s natural flavor. |
| Fresh Chives or Parsley | For garnish | Adds a bright, fresh finish. |
Step-by-Step Instructions
1. Prep the Potatoes
Wash and scrub your potatoes. You can leave the skins on for a rustic feel or peel them for a more refined texture. Cut them into roughly 1-inch chunks.
2. Layer the Slow Cooker
Place the potato chunks into the bottom of the slow cooker. Scatter the sliced onions evenly over the top.
3. Season and Add Butter
Sprinkle the garlic powder, salt, and pepper over the vegetables. Finally, place the pats of butter on top of the mixture. As they melt, the butter will trickle down, coating every piece.
4. Slow Cook to Perfection
Cover and cook on Low for 6–7 hours or on High for 3–4 hours. The potatoes are done when they are fork-tender and have absorbed the savory butter sauce.
5. Toss and Serve
Before serving, give the mixture a gentle toss to ensure the onions and butter are well-distributed. Garnish with fresh herbs and serve immediately.
Pro-Tips for Success
- Choose the Right Potato: Yukon Gold potatoes are excellent for this recipe because they maintain a creamy texture without falling apart.
- Avoid Water: Do not add extra water or broth! The moisture from the onions and the fat from the butter provide all the liquid necessary for a rich sauce.
- Add a Kick: For a bit of heat, sprinkle some red pepper flakes or smoked paprika over the butter before starting the cooking process.
