Slow-Cooker Sour Cream French Onion Sirloin Tips

This slow-cooker dinner is the definition of set-it-and-forget-it. Tender sirloin tips, sweet Vidalia onions, and a velvety sour cream gravy come together with just five ingredients and almost no effort. Serve over buttered egg noodles for a comforting meal that tastes like you simmered it all day—because you did.

Sirloin steak tips are a budget-friendly cut that turns meltingly tender when cooked low and slow. Here they simmer in a rich blend of beef consommé, caramelized onions, and sour cream, creating a gravy that is both tangy and deeply savory.

The brown gravy mix adds body and a beautiful mahogany color. This recipe is perfect for busy weeknights: just layer the ingredients in the slow cooker, walk away, and come back to a dinner that smells incredible.

Ingredients

Why this recipe works

The slow cooker works magic on sirloin tips, breaking down the connective tissue over hours of gentle heat. The result is fork-tender beef that practically falls apart.

The low temperature also allows the onions to slowly caramelize, releasing their natural sweetness into the gravy without any extra effort from you.

Sour cream adds a tangy richness that balances the savory beef and onions, while the brown gravy mix thickens the sauce and gives it a deep, glossy finish.

Because the ingredients are layered rather than stirred, the flavors meld gradually, creating a complex gravy that tastes like it simmered all day—because it did.

Notes and substitutions

Top sirloin steak tips are ideal for this recipe because they have enough marbling to stay moist during long cooking. If you can only find sirloin steak, cut it into 2-inch chunks.

Vidalia onions are sweet and mild, but any sweet onion works. Beef consommé is richer than broth; if you substitute broth, add a teaspoon of onion powder for depth.

Brown gravy mix is a pantry staple that provides both flavor and thickening. Use a gluten-free version if needed. Sour cream should be full-fat for the best texture; low-fat can curdle. The recipe is forgiving—you can cook on high for 3 to 4 hours if you are short on time, but low heat yields the most tender meat.

• Vidalia onions: Sweet onions like Walla Walla or Maui, or yellow onions for a sharper flavor.
• Beef consommé: Beef broth with a pinch of onion powder, or use a rich beef stock.
• Sour cream: Plain Greek yogurt, but stir it in at the end and do not boil.
• Wide egg noodles: Mashed potatoes, rice, or crusty bread for serving.

Equipment

• 6-quart slow cooker
• Large skillet (optional, for searing)
• Cutting board
• Chef's knife
• Measuring cups and spoons
• Large pot for noodles
• Colander
• Serving spoon