This slow cooker cowboy potato casserole is my kind of weeknight hero: you literally throw raw ground beef and sliced russet potatoes into the crock, add just three hearty pantry staples, and let it do its thing while you live your life. It has that cozy, Midwest meat-and-potatoes vibe my husband grew up with, but in a super low-effort, dump-and-go format. The whole idea is inspired by classic cowboy casseroles—simple, filling, and built from what you already have on hand—just adapted for the slow cooker so dinner basically cooks itself.
Scoop the casserole into bowls and top with a little extra shredded cheese, sliced green onions, or a spoonful of sour cream if you like. It’s hearty enough to stand alone, but a simple green salad, steamed broccoli, or roasted green beans help balance the richness. Cornbread or crusty rolls are great for soaking up the cheesy, beefy sauce. If you’re feeding a crowd, add a side of fruit or a quick veggie tray so everyone can build a plate that feels complete.
Slow Cooker Cowboy Potato Casserole
Servings: 6
Ingredients
1 1/2 pounds lean ground beef (85–90% lean, raw)
2 pounds russet potatoes, scrubbed and thinly sliced (about 1/8–1/4 inch thick)
1 (10.5-ounce) can condensed cream of mushroom soup
1 (10-ounce) can diced tomatoes with green chiles (such as Rotel), undrained
2 cups shredded cheddar cheese, divided
1 teaspoon kosher salt
1/2 teaspoon black pepper
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
Nonstick cooking spray or a little oil for the slow cooker
Directions
Lightly coat the inside of a 5- to 6-quart slow cooker with nonstick cooking spray or a little oil so the potatoes don’t stick.
Scrub the russet potatoes and slice them into thin rounds, about 1/8–1/4 inch thick. You can leave the skins on for extra texture and fiber.
Spread the raw ground beef evenly over the bottom of the slow cooker, breaking it up gently with your fingers into a flat, even layer. It should look like a loose, uncooked burger patty covering the bottom.
Layer the sliced potatoes directly over the raw ground beef, spreading them out so they cover the beef in an even layer. It’s okay if they overlap slightly, but try to keep the layer relatively even so they cook through.
In a medium bowl, stir together the condensed cream of mushroom soup, the can of diced tomatoes with green chiles (including all the juices), 1 1/2 cups of the shredded cheddar cheese, salt, pepper, garlic powder, and onion powder until well combined. This is your rich, hearty sauce.
Pour the sauce evenly over the potatoes and beef, using a spatula to spread it so most of the potatoes are coated. Don’t worry if a few edges peek out; they’ll still soften as they cook.
Cover the slow cooker with the lid and cook on LOW for 6–7 hours, or on HIGH for 3–4 hours, until the potatoes are tender when pierced with a fork and the beef is cooked through and no longer pink.
Once everything is cooked and bubbly around the edges, sprinkle the remaining 1/2 cup shredded cheddar cheese evenly over the top. Cover again for about 5–10 minutes, just until the cheese melts.
Turn off the slow cooker and let the casserole rest, uncovered, for about 5 minutes to thicken slightly. Then scoop into bowls and serve hot.
Variations & Tips
For a little extra smokiness, swap part of the cheddar for shredded pepper jack or smoked cheddar. If your family likes more spice, use hot diced tomatoes with green chiles and add a pinch of cayenne or crushed red pepper to the sauce. To stretch the meal, you can add a layer of frozen corn or canned black beans (drained and rinsed) on top of the raw ground beef before adding the potatoes; just keep in mind this adds a bit of volume, so use at least a 6-quart slow cooker. For a slightly lighter version, use 93% lean ground beef and reduced-fat cheese and soup—just know the sauce will be a bit less rich. If you don’t have cream of mushroom, cream of chicken or cream of celery soup works too and gives a slightly different flavor. Busy-week tip: slice the potatoes the night before and store them in cold water in the fridge to prevent browning; drain and pat dry before layering in the slow cooker in the morning so you can truly just dump, start the cooker, and head out the door.