Flag Day marks the unofficial start of summer, and these Slow Cooker Flag Day Potatoes are the perfect side dish to celebrate. With just four simple ingredients and almost no effort, you can create potatoes that are tender, buttery, and infused with garlic and salt. The slow cooker does all the work, transforming humble russet potatoes into a dish that tastes like you spent hours in the kitchen.
The beauty of this recipe lies in its simplicity. Whole, unpeeled russet potatoes cook low and slow in a mixture of butter, salt, and garlic powder. As they cook, the potatoes absorb the flavors, and the butter melts into a rich, savory coating. When they are fork-tender, a gentle press cracks the skins, allowing the buttery garlic mixture to seep inside. The result is a potato that is creamy on the inside, flavorful on the outside, and absolutely irresistible.
Perfect for summer barbecues, holiday gatherings, or any night you need an easy, crowd-pleasing side dish.
Why You’ll Love This Recipe
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Only 4 simple ingredients
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Set-it-and-forget-it slow cooker convenience
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No peeling, no boiling, no oven required
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Potatoes become tender and creamy inside
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Buttery, garlicky, savory coating
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Perfect for summer entertaining
4-Ingredient Slow Cooker Flag Day Potatoes
Prep Time: 10 minutes | Cook Time: 3.5-4.5 hours on HIGH or 6-7 hours on LOW | Total Time: Approximately 3.5-7 hours
Yield: 6 servings
Ingredients
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3 pounds small to medium russet potatoes, raw, unpeeled, whole (about 8-10 potatoes, scrubbed well)
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4 tablespoons unsalted butter, cut into small pieces
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1½ teaspoons kosher salt (or 1 teaspoon table salt)
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1 teaspoon garlic powder (or granulated garlic)
Instructions
1. Prepare the Potatoes:
Scrub the russet potatoes well under cool running water, using a brush or your hands to remove any visible dirt from the skins. Do not peel or cut them; leave the potatoes whole. Pat them dry with a clean towel so excess water does not pool in the slow cooker.
2. Layer in the Slow Cooker:
Place the raw, unpeeled, whole russet potatoes in a single, snug layer in the bottom of a 4- to 6-quart slow cooker. If you need to stack a few on top, that is fine; just keep the majority touching the bottom so they cook evenly.
3. Season the Potatoes:
Sprinkle the kosher salt and garlic powder evenly over the potatoes. Try to distribute the seasonings so each potato gets a bit of coverage. Drop the butter pieces over and around the potatoes so they can melt down and coat everything as they cook.
4. Cook:
Cover the slow cooker with the lid, making sure it fits tightly so steam does not escape. Cook on HIGH for 3½ to 4½ hours, or on LOW for 6 to 7 hours, until the potatoes are very tender when pierced with a fork or skewer. The exact time will depend on the size of your potatoes and your specific slow cooker.
5. Coat and Crack:
Once the potatoes are tender, use tongs to gently roll them around in the melted butter and seasonings that have collected at the bottom of the slow cooker, coating the skins. If desired, lightly press each potato with the back of a spoon or a fork right in the slow cooker to crack the skins a bit so some of the buttery mixture seeps inside.
6. Serve:
Taste one potato and add a pinch more salt if needed, tossing gently to distribute. Serve the potatoes hot straight from the slow cooker, spooning some of the buttery garlic mixture over each portion. Keep the slow cooker on WARM if serving over a couple of hours.
Recipe Notes & Pro Tips
Russet Potatoes are Best: Russet potatoes (also called Idaho potatoes) have a fluffy, starchy interior that becomes perfectly creamy when cooked. They are ideal for this recipe. Yukon Gold potatoes can be used but will have a waxy, firmer texture. Avoid red potatoes, which may not become as tender.
Do Not Peel or Cut: Leaving the potatoes whole and unpeeled helps them hold their shape during the long cooking time. The skins also add texture, color, and nutrients. Scrubbing them well is sufficient.
Size Matters: Small to medium potatoes (about 2-3 inches in diameter) cook more evenly and quickly than large potatoes. If using large potatoes, increase the cooking time by 1-2 hours.
Cracking the Skins: Gently pressing the potatoes with a spoon or fork after cooking cracks the skins, allowing the buttery garlic mixture to seep inside. This step is optional but highly recommended for maximum flavor.
Add Fresh Herbs (Optional): For extra flavor, add 2 sprigs of fresh rosemary or thyme to the slow cooker along with the butter. Remove before serving. Sprinkle fresh chopped parsley or chives over the potatoes just before serving.
Make Them Spicy: Add ½ teaspoon of red pepper flakes or 1 teaspoon of smoked paprika along with the garlic powder. The paprika adds color and a subtle smoky heat.
Variations
Garlic Herb Potatoes: Add 2 sprigs of fresh rosemary and 2 sprigs of fresh thyme to the slow cooker along with the butter. Remove the herbs before serving. Garnish with fresh parsley.
Parmesan Potatoes: During the last 15 minutes of cooking, sprinkle ½ cup of grated Parmesan cheese over the potatoes. Cover and cook until the cheese is melted and slightly crispy.
Bacon Potatoes: Cook 6 slices of bacon until crisp, then crumble. Sprinkle the bacon over the potatoes just before serving. The smoky, salty bacon adds another dimension of flavor.
Lemon Garlic Potatoes: Add the zest of 1 lemon and 1 tablespoon of fresh lemon juice to the butter mixture. The lemon adds brightness and cuts through the richness.
Spicy Southwest Potatoes: Add 1 teaspoon of chili powder, ½ teaspoon of cumin, and ¼ teaspoon of cayenne pepper along with the garlic powder. Garnish with fresh cilantro.
Cheesy Potatoes: Sprinkle 1 cup of shredded cheddar cheese over the potatoes during the last 10 minutes of cooking. Cover until melted and bubbly.
Serving Suggestions
These versatile potatoes pair beautifully with:
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Grilled steak, pork chops, or chicken
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Roasted turkey or ham
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Barbecue ribs or pulled pork
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Baked fish or salmon
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Burgers or hot dogs
For a complete summer meal, serve alongside:
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Coleslaw or a green salad
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Corn on the cob
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Baked beans
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Fresh fruit salad
A sprinkle of fresh parsley or chives adds color and freshness.
Storage & Reheating
Store leftovers in an airtight container in the refrigerator for up to 5 days.
To reheat, place whole potatoes in a 350°F oven for 10-15 minutes, or microwave individual potatoes in 60-second bursts. Sliced potatoes can be reheated in a skillet over medium heat with a little butter.
These potatoes do not freeze well, as the texture becomes mealy upon thawing.
Why This Recipe Works
The slow cooker is the perfect vessel for these potatoes because it provides gentle, even heat that cooks them slowly without scorching or drying out. The sealed environment traps steam, which helps the potatoes become tender and creamy on the inside while the skins stay intact.
Cooking the potatoes whole and unpeeled allows them to hold their shape and absorb the flavors of the butter, salt, and garlic powder from the outside in. The butter melts and pools at the bottom of the slow cooker, creating a rich, savory coating. Rolling the potatoes in the butter mixture after cooking ensures every surface is covered.
Cracking the skins is the secret to maximum flavor. When you press the potatoes gently, the skins split open, allowing the buttery garlic mixture to seep into the fluffy interior. This simple step transforms good potatoes into great ones.
This recipe is proof that you do not need a long list of ingredients or complicated techniques to make a memorable side dish. With four simple ingredients and a slow cooker, you can create potatoes that are buttery, garlicky, and perfectly tender. Perfect for Flag Day, summer barbecues, or any night you need an easy, crowd-pleasing side dish