These 4-ingredient slow cooker Flag Day cubes are the kind of fuss-free side dish I lean on when the yard needs raking, the flag needs hanging, and company is due any minute. They start with simple raw red potatoes, just like the ones my parents grew along the windbreak on our old Midwestern farm. A slow, gentle simmer turns those cubes into tender, glistening bites tucked into a glossy, golden-amber sauce with little dark edges where the sugars caramelize. It’s the sort of recipe that lets you step away, straighten up the backyard, and still bring something warm and comforting to the table when everyone wanders in hungry from the grill or the porch.
Serve these Flag Day potato cubes right in the slow cooker to keep them warm on a buffet table. They’re wonderful alongside grilled burgers, brats, or chicken, and they soak up juices from ribs or pulled pork like a dream. A simple green salad or coleslaw and a bowl of baked beans will round out the plate in true Midwestern picnic fashion. If you like, sprinkle a little chopped parsley or sliced green onion over the top just before serving for a bit of color against the glossy, caramelized potatoes.
4-Ingredient Slow Cooker Flag Day Potato CubesServings: 6
Ingredients
2 1/2 pounds raw red potatoes, scrubbed and cut into 3/4-inch cubes
1/2 cup salted butter, melted
1/2 cup packed brown sugar (light or dark)
1/3 cup low-sodium soy sauce
Directions
Lightly grease the inside of a 4- to 6-quart slow cooker with a bit of butter or nonstick spray to help keep the sauce from sticking too much around the edges.
Scrub the red potatoes well and cut them into roughly 3/4-inch cubes, keeping the pieces as even as you can so they cook at the same rate. Leave the skins on for color and texture.
In a medium bowl or large measuring cup, whisk together the melted butter, brown sugar, and soy sauce until the sugar is mostly dissolved and the mixture looks smooth and glossy.
Add the cubed potatoes to the slow cooker in an even layer. Pour the butter–brown sugar–soy mixture evenly over the potatoes, using a spatula to scrape out every bit of the sauce.
Stir gently to coat all of the potato cubes with the sauce. Spread the potatoes back into an even layer so they cook uniformly.
Cover the slow cooker with the lid and cook on LOW for 5 to 6 hours, or on HIGH for about 3 to 3 1/2 hours, until the potatoes are very tender when pierced with a fork.
About halfway through the cooking time, carefully remove the lid and give the potatoes a gentle stir, scooping some of the sauce from the bottom over the top. Replace the lid quickly to keep the heat in.
In the last 30 to 45 minutes of cooking, remove the lid and stir again. Leave the lid slightly askew or off (if your slow cooker runs hot) to let some moisture escape so the sauce can thicken and turn a deep golden-amber color. Stir once or twice more, scraping the sides so the darker, caramelized bits blend back into the sauce.
When the potatoes are tender and the sauce is thick, glossy, and clings to the cubes with a few darker caramelized edges showing, turn the slow cooker to WARM. Taste and add a pinch more brown sugar or a splash more soy sauce if you want it sweeter or saltier.
Serve the potatoes straight from the slow cooker, spooning plenty of the thickened sauce over each serving so every bite is coated and glistening.
Variations & Tips
For a slightly smokier flavor that still keeps the ingredient list short, you can swap half of the soy sauce for Worcestershire sauce and add a small pinch of smoked paprika if you don’t mind stretching beyond the strict four-ingredient idea. If you prefer a little heat, a light sprinkle of black pepper or crushed red pepper at the end will balance the sweetness nicely. You can also use Yukon gold potatoes in place of red potatoes; just keep the cubes about the same size so they hold their shape and cook evenly. To make ahead, you can cube the potatoes a few hours early and keep them covered with cold water in the refrigerator, then drain and pat dry before adding to the slow cooker so the sauce doesn’t get watered down. For food safety, always start with clean, scrubbed potatoes and a clean slow cooker insert. Keep the lid on as much as possible so the temperature stays in the safe zone, and don’t leave the finished dish on WARM for more than 2 to 3 hours. Refrigerate leftovers within 2 hours of serving, and reheat thoroughly until piping hot before eating. If reheating in the microwave, cover the dish so the sauce doesn’t splatter and stir halfway through to ensure even heating.
