Cowboy Butter French Onion Tenderloin Tips Crockpot Dinner

This Cowboy Butter French Onion Tenderloin Tips recipe turns simple ingredients into a rich, savory dinner that tastes like you spent hours tending the stove.

The slow cooker does all the work: beef tenderloin tips simmer with sweet Vidalia onions, beef consommé, garlic-herb cowboy butter, and au jus mix until the meat is fork-tender and the sauce is deeply flavorful. Serve it over mashed potatoes for a comforting meal that's impressive enough for company but easy enough for a weeknight.

The genius of this recipe is how little effort it requires. You simply layer raw beef tenderloin tips and sliced Vidalia onions in the slow cooker, pour in a can of beef consommé, top with slices of garlic-herb cowboy butter and a packet of dry au jus mix, then walk away.

Hours later, the beef is meltingly tender, the onions have caramelized into silky ribbons, and the sauce has become a rich, buttery gravy. It's a true dump-and-go dinner that delivers restaurant-quality flavor with practically zero hands-on time.

Ingredients

Why this recipe works

Slow cooking is the secret to turning beef tenderloin tips into spoon-tender morsels. The low, steady heat of the Crockpot breaks down the connective tissue in the meat, while the consommé and au jus mix create a deeply savory braising liquid. The garlic-herb cowboy butter melts into the sauce, adding richness and a subtle herbal note that ties everything together. Because the beef cooks in its own juices, it stays moist and tender without any searing or browning.

The onions play a crucial role. Sliced thin and layered over the raw beef, they slowly soften and caramelize in the buttery liquid, releasing their natural sweetness. By the end of cooking, they've transformed into silky, golden strands that mimic the flavor of classic French onion soup. The combination of sweet onions, savory consommé, and rich butter creates a sauce that's both comforting and elegant — perfect for spooning over mashed potatoes or crusty bread.

Notes and substitutions

Beef tenderloin tips are the star of this dish. They're already trimmed and cut into bite-sized pieces, making them ideal for slow cooking. If you can't find them, sirloin tips or even a chuck roast cut into cubes will work — just adjust the cooking time for chuck, which benefits from a longer cook.

Vidalia onions are sweet and mild, but any sweet yellow onion will do. For the cowboy butter, look for a garlic-herb compound butter in the dairy aisle, or make your own by mixing softened butter with garlic and herbs.

The dry au jus mix is a convenient shortcut that adds deep beefy flavor and helps thicken the sauce slightly. If you prefer to avoid packaged mixes, substitute with a combination of beef bouillon and onion powder.

The consommé is a concentrated beef broth that adds body and color; you can use beef broth instead, but the sauce will be thinner. This recipe is naturally gluten-free if you use a gluten-free au jus mix, and the butter can be swapped for a dairy-free alternative to make it dairy-free.

• beef tenderloin tips: sirloin or chuck roast cut into 1-inch cubes (cook longer for chuck, about 8 hours on low)
• Vidalia onions: sweet yellow onions or Walla Walla onions
• garlic-herb cowboy butter: salted butter mixed with 1 teaspoon garlic powder and 1 teaspoon dried parsley
• dry au jus mix: 1 tablespoon beef bouillon granules plus 1/2 teaspoon onion powder

Equipment

• 6-quart slow cooker
• cutting board
• sharp knife
• measuring cups
• measuring spoons
• serving spoon