Crockpot Cheddar Roasted Garlic Scalloped Potatoes

This Crockpot scalloped potato recipe delivers all the creamy, cheesy comfort of a classic gratin without the fuss of a béchamel or the watchful eye of an oven. Thinly sliced Yukon Gold potatoes are layered with sweet caramelized onions and a rich roasted garlic cream sauce, then topped with sharp cheddar and butter.

The slow cooker does all the work, transforming simple ingredients into a velvety, bubbling casserole that's perfect for weeknight dinners or holiday feasts.

Scalloped potatoes are a beloved side dish, but traditional recipes often require standing over a hot stove to make a roux and careful timing to avoid curdled cream. This slow cooker version eliminates all that: simply layer the ingredients in the Crockpot, cover, and let low, steady heat coax the potatoes to fork-tender perfection.

The result is a luscious, garlicky, cheesy casserole with a golden crust and a creamy interior. It's the ultimate hands-off side dish that tastes like you spent hours in the kitchen.

Ingredients

Why this recipe works

The slow cooker's gentle, moist heat is ideal for cooking potatoes evenly without the risk of scorching or drying out. The low temperature allows the starch in the Yukon Golds to slowly release, creating a naturally creamy texture that binds the sauce together.

As the potatoes cook, they absorb the roasted garlic cream, becoming tender and flavorful throughout, while the cheese and butter melt into a rich, bubbling topping.

Layering the ingredients ensures every bite is balanced: potatoes, sweet onions, garlicky cream, and sharp cheddar in each scoop. The overlapping potato slices create a self-saucing effect, as the cream and butter seep between the layers, infusing the entire dish with flavor. This method is forgiving and foolproof—even if the potato slices are slightly uneven, they will cook to the same tender consistency.

Notes and substitutions

Yukon Gold potatoes are the best choice here because their buttery flavor and medium starch content give the dish a creamy, velvety texture without falling apart. They also have thin skins, so no peeling is required—just slice them thinly with a mandoline for uniform pieces that cook evenly. If using russets, peel them first for a smoother texture; red potatoes will hold their shape a bit more but still work well.

The roasted garlic cream sauce is the secret to deep, savory flavor. Use a store-bought version or make a quick homemade sauce by simmering heavy cream with roasted garlic and a pinch of salt.

Caramelized onions add sweetness and depth; if you don't have them on hand, sauté sliced onions slowly in butter until golden brown. Sharp cheddar provides a bold, tangy contrast to the creamy potatoes, but feel free to substitute Gruyère or Monterey Jack.

• Yukon Gold potatoes: Russet potatoes (peeled if desired) or red potatoes (slightly waxier, but work well)
• Sharp cheddar cheese: White cheddar, Gruyère, or Monterey Jack for a milder flavor
• Roasted garlic cream sauce: Store-bought garlic Alfredo sauce or a homemade béchamel with roasted garlic
• Salted butter: Unsalted butter plus a pinch of salt per pat

Equipment

• 7-quart slow cooker (Crockpot)
• Mandoline slicer
• Cutting board
• Chef's knife
• Measuring cups
• Serving spoon
• White dinner plate