These 4-ingredient slow cooker rosemary butter potatoes are the kind of side dish that quietly steals the whole meal. The first time I had them was when my daughter surprised me with brunch on Mother’s Day—she set a rustic bowl of glossy, herb-flecked red potatoes on the table, butter pooling in the center and a little sprig of rosemary tucked on top. They were simple, comforting, and just a bit special, and they’ve become the only side dish I request for holidays and family dinners. This recipe leans on the natural creaminess of red potatoes, the aroma of fresh rosemary, and the convenience of the slow cooker, making it perfect for busy home cooks who still want something that feels celebratory.
Serve these potatoes straight from the slow cooker into a warm stoneware bowl, letting the extra melted butter collect in the center for spooning over the top. They pair beautifully with roasted chicken, seared pork chops, or a simple grilled steak, and they’re equally at home on a holiday brunch table next to quiche and a green salad. For a complete plate, I like to add something bright and acidic—like a lemony arugula salad or roasted green beans with a squeeze of lemon—to balance the richness of the butter. Leftovers reheat well alongside scrambled eggs for breakfast or tucked next to a piece of baked salmon for an easy weeknight dinner.
Slow Cooker Rosemary Butter Red PotatoesServings: 6
Ingredients
3 pounds small red potatoes, scrubbed and quartered
1/2 cup (1 stick) unsalted butter, melted
1 1/2 teaspoons kosher salt
2 teaspoons finely chopped fresh rosemary, plus 1 small sprig for garnish
Directions
Prepare the potatoes: Rinse the red potatoes under cool running water and scrub well to remove any dirt. Pat them dry with a clean kitchen towel, then cut each potato into quarters so the pieces are roughly the same size for even cooking.
Melt the butter: In a small saucepan or microwave-safe bowl, melt the butter just until liquid but not sizzling. This helps it coat the potatoes more evenly in the slow cooker.
Season the butter: Stir the kosher salt and finely chopped fresh rosemary into the melted butter. The warm butter will help release the rosemary’s oils, giving you more flavor with minimal ingredients.
Coat the potatoes: Add the quartered red potatoes to a 5- to 6-quart slow cooker. Pour the rosemary butter mixture evenly over the potatoes. Using a large spoon or spatula, gently toss the potatoes right in the slow cooker until every piece is lightly coated.
Slow cook: Cover the slow cooker with the lid and cook on LOW for 4 to 5 hours, or on HIGH for 2 to 3 hours, until the potatoes are very tender when pierced with a fork but still hold their shape. Avoid lifting the lid too often, as that can extend the cooking time.
Finish and serve: Once the potatoes are tender, give them a gentle stir to re-coat with the butter that has settled at the bottom. Taste and adjust the seasoning with a pinch more salt if needed. Transfer the potatoes to a warm, rustic serving bowl, spooning some of the extra melted butter into the center so it pools slightly.
Garnish and present: Sprinkle a pinch of extra chopped rosemary over the top if you like, and tuck a small fresh rosemary sprig into the center for a simple garnish. Serve warm, ideally with a linen napkin underneath the bowl for that cozy, holiday-brunch feel.
Variations & Tips
For a slightly richer flavor, you can use salted butter and reduce the added salt to 1 teaspoon, adjusting at the end to taste. If you don’t have fresh rosemary, substitute 1 teaspoon dried rosemary, crushed lightly between your fingers before stirring into the butter to help release its aroma. For a garlicky version, add 1–2 minced garlic cloves to the melted butter with the rosemary, or stir in 1/2 teaspoon garlic powder before coating the potatoes. To introduce a bit of brightness, squeeze a teaspoon or two of fresh lemon juice over the cooked potatoes right before serving. You can also add a small handful (about 1/4 cup) of grated Parmesan at the end and gently toss for a more indulgent, cheesy finish. For a lighter option, reduce the butter to 6 tablespoons and add 1–2 tablespoons of low-sodium chicken or vegetable broth for extra moisture. Food safety tips: Always scrub potatoes thoroughly to remove soil, and trim away any green spots or deep eyes before cooking, as green areas can indicate solanine, which is best avoided. Keep raw potatoes and your cutting board separate from raw meats to prevent cross-contamination. If you prepare the potatoes ahead of time, store the cut pieces submerged in cold water in the refrigerator for up to 24 hours, then drain and pat dry before adding to the slow cooker. Do not leave cooked potatoes sitting at room temperature for more than 2 hours; refrigerate leftovers promptly in a shallow container and reheat thoroughly before serving.
