5-Ingredient Slow Cooker Dad’s Banquet Beef Tenderloin

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5-Ingredient Slow Cooker Dad’s Banquet Beef Tenderloin

This 5-Ingredient Slow Cooker Dad’s Banquet Beef Tenderloin is a rich, savory, and comforting dinner that feels special enough for Sunday supper or a family celebration. With just five simple ingredients and the convenience of a slow cooker, you can prepare a delicious beef dinner without spending hours in the kitchen.

The beef slowly cooks until tender and flavorful, soaking up a savory sauce that makes every bite delicious. Whether you are preparing a cozy family meal or hosting guests, this easy slow cooker recipe is a wonderful way to bring everyone together around the dinner table.

Ingredients

  • 2–3 pounds beef tenderloin or a suitable beef roast
  • 1 packet dry onion soup mix
  • 1 packet brown gravy mix
  • 1 cup beef broth
  • 3 tablespoons butter, cut into pieces

Instructions

  1. Prepare the beef: Place the beef tenderloin or roast in the bottom of a slow cooker. Trim any excess fat if needed.
  2. Add the seasonings: Sprinkle the onion soup mix and brown gravy mix evenly over the beef.
  3. Pour in the broth: Add the beef broth around the meat to help create a rich, savory cooking sauce.
  4. Add the butter: Place the butter pieces over the top of the beef.
  5. Slow cook: Cover and cook on LOW for approximately 4–6 hours for a tenderloin, checking the temperature and tenderness as it cooks. Larger or tougher beef roasts may require 7–8 hours or longer, depending on the cut.
  6. Check for doneness: Use a meat thermometer to ensure the beef reaches a safe internal temperature. For whole beef tenderloin, the USDA recommends at least 145°F (63°C), followed by a 3-minute rest. Tougher cuts may need additional cooking to become tender.
  7. Serve: Allow the beef to rest before slicing. Spoon the warm gravy over the meat and serve immediately.

Helpful Tips for the Best Results

  • Choose the right cut: Beef tenderloin is naturally tender and cooks differently from chuck roast. Avoid cooking tenderloin for too long, as it can become dry. A chuck roast is better suited to long, slow cooking.
  • Make the gravy richer: If the sauce is thinner than you prefer, transfer it to a saucepan and simmer until reduced, or thicken it with a cornstarch slurry.
  • Add extra flavor: Freshly cracked black pepper, minced garlic, or a little fresh rosemary can complement the beef beautifully, although these additions will take the recipe beyond five ingredients.
  • Avoid lifting the lid: Keeping the slow cooker covered helps maintain a steady cooking temperature.
  • Slice against the grain: This helps create more tender, enjoyable slices of beef.

What to Serve with Beef Tenderloin

This savory beef dinner pairs beautifully with creamy mashed potatoes, roasted carrots, steamed green beans, buttered corn, or fluffy dinner rolls. You can also serve it over egg noodles or rice to soak up the delicious gravy.

For a special family dinner, add a fresh garden salad and roasted vegetables for a balanced, comforting meal.

Storing and Reheating Leftovers

Allow leftover beef to cool slightly, then refrigerate it in an airtight container with some of the gravy. Use refrigerated leftovers within 3–4 days. Reheat gently with a little gravy or broth to help prevent the meat from drying out. You can also freeze the beef and sauce in a freezer-safe container for approximately 2–3 months for the best quality.

Final Thoughts

This 5-Ingredient Slow Cooker Dad’s Banquet Beef Tenderloin is a simple way to make an ordinary family dinner feel extra special. The combination of savory onion seasoning, rich gravy, buttery flavor, and tender beef creates a comforting meal with minimal preparation. Serve it with your favorite sides, gather everyone around the table, and enjoy a delicious homemade dinner without all the fuss.