Slow Cooker Onion Garlic Potatoes

Slow Cooker Onion Garlic Potatoes Tender, buttery potatoes slow-cooked with sweet caramelized onions, bold garlic, and savory herbs until they are melt-in-your-mouth soft and deeply rich with flavor — an effortless, irresistible side dish that practically makes itself and goes with absolutely everything.

INGREDIENTS

• 3 pounds Yukon Gold potatoes, peeled and sliced into 1/4-inch rounds
• 2 large yellow onions, thinly sliced
• 6 garlic cloves, minced
• 0.5 cups unsalted butter, sliced into pats
• 1.5 teaspoons kosher salt
• 1 teaspoon black pepper
• 1 teaspoon garlic powder
• 0.5 teaspoons onion powder
• 0.5 teaspoons smoked paprika
• 0.5 teaspoons dried thyme
• 0.5 teaspoons dried rosemary
• 0.25 cups chicken broth
• 2 tablespoons fresh parsley, chopped, for garnish

STEPS

1. Prep the potatoes and onions: Peel and slice the potatoes into even 1/4-inch rounds — uniform thickness ensures they cook evenly throughout. Slice the onions as thinly as possible. Pat the potato slices dry with paper towels to remove excess surface moisture.
2. Season the potatoes: In a large bowl, toss the sliced potatoes with the kosher salt, black pepper, garlic powder, onion powder, smoked paprika, dried thyme, and dried rosemary until every slice is evenly coated in the seasoning.
3. Layer the slow cooker: Lightly grease the inside of the slow cooker with butter or cooking spray. Add a layer of seasoned potato slices to the bottom, followed by a layer of sliced onions, a scattering of minced garlic, and a few pats of butter. Repeat the layers — potatoes, onions, garlic, butter — until all the ingredients are used up, finishing with butter pats generously scattered over the very top.
4. Add the broth: Pour the chicken broth evenly over the layered potatoes. The broth creates just enough steam to cook the potatoes through gently without making them watery — the butter and onion juices do the rest.
5. Slow cook: Place the lid on the slow cooker and cook on LOW for 6–7 hours or on HIGH for 3–4 hours until the potatoes are completely tender, the onions are silky and sweet, and the garlic has mellowed into a rich, savory depth throughout every layer. Do not lift the lid during cooking.
6. Optional crispy finish: For a golden, lightly crisped top — highly recommended — carefully transfer the cooked potatoes to an oven-safe dish and place under the broiler on high for 3–5 minutes until the top is lightly golden and the edges begin to caramelize. Watch closely under the broiler.
7. Garnish and serve: Spoon gently into a serving dish, spooning all the buttery garlic and onion juices from the bottom of the slow cooker generously over the top. Garnish with fresh chopped parsley and serve hot.

NOTES Tips: Yukon Gold potatoes are the best choice here — their naturally buttery flavor and creamy texture hold up beautifully through the long slow cook without turning mushy or falling apart. Slicing evenly to 1/4-inch thickness is the most important prep step — thick and thin slices mixed together cook unevenly, leaving some undercooked while others turn mushy. A mandoline makes this quick and perfectly consistent. Do not skip the butter between the layers — it melts slowly into the potatoes, onions, and garlic as they cook and creates the incredibly rich, savory depth that makes this dish so satisfying. The chicken broth adds just enough moisture without making the potatoes soggy — do not add more than stated. For extra indulgence scatter 1 cup of shredded Gruyère or sharp cheddar over the top in the last 30 minutes of cooking and let it melt into a gorgeous cheesy crust. Leftovers reheat beautifully in a skillet over medium heat with a knob of butter until warmed through and lightly crisped on the bottom.