Caramelized Onion Beef Sliders Recipe

Many thanks to Walmart and Kingsford Charcoal for their sponsorship of this post.  All thoughts, opinions and recipes are my own.

Tailgate 15

It is officially tailgate season!!! I love throwing the before party even more than I like watching the big game! We live right next to Ball State University in Indiana so we threw a big tailgate for the neighbors in celebration for the Cardinal’s football game!

Tailgate 11
Everyone brought a side dish or a dessert and we partied before the game began.

Tailgate 12

The best part of the party was the sliders! I put my husband to work on our Charcoal grill. We love the taste of beef when it is cooked with good Kingsford charcoal!

Tailgate 13

I get pretty serious when it comes to cooking meat (especially for other people.) This beef recipe has been in the family for years. The meat always turns out moist and full of flavor.   My other favorite part of these beef sliders are the onions. Usually caramelized onions take some work, but when you cook them in the slow cooker, you can throw them in and forget about them until you are ready to party!
Below is the recipe for these delicious sliders!

Walmart Burger 2

Caramelized Onion Beef Sliders:

Serves: 6

Caramelized Onion Beef Sliders

The caramelized onions take these sliders over the top!

20 minPrep Time

15 minCook Time

35 minTotal Time

Save RecipeSave Recipe


  • For the Caramelized Onions
  • 5 large onions, sliced
  • 1/4 C olive oil
  • 1/2 tsp salt
  • For the Burgers
  • 1 pound of Walmart's Ground Beef
  • 1 Tablespoon of Worcestershire sauce
  • 1 teaspoon of olive oil
  • 1 teaspoon of garlic salt
  • 1/2 cup of mayonnaise
  • 1/3 cup of crumbled blue cheese
  • 12 slider buns, toasted
  • 12 thin tomato slices
  • 12 pieces of green lettuce


  1. In the morning before the tailgate, place your sliced onions in slow cooker with 1/4 cup oil and 1/2 teaspoon of salt. Stir to coat them.
  2. Cook them in your slow cooker on low for about 10 hours or high or 6 to 8 hours on high.
  3. (if your tailgate is in the afternoon, you can cook your onions at night)
  4. Now for the burgers:
  5. In a large bowl, add your ground beef. For every pound of ground beef, add 1 Tablespoon of Worcestershire,1 teaspoon of olive oil and 1 teaspoon of garlic salt. Add salt and pepper to taste.
  6. Split your beef mixture into equal sized balls. Shape each one into a 1/4-inch thick patty.
  7. When using Kingsford charcoal, let your briquettes heat for about 30 minutes before you start cooking on them. When they are mostly white, they are ready for you to start cooking.
  8. Place your burgers on your grill and cook them until they are cooked all the way through. Don't forget to carefully flip them about 1/2 way through.
  9. For the condiments:
  10. Place your blue cheese and mayonnaise in a food processor and blend until smooth. Spread blue cheese mixture evenly on bottom halves and top halves of the bun. Place 1 patty on bottom half of each bun. Top patties with tomato slices, lettuce and caramelized onion; cover with bun tops.


Want more grilling tips? Go HERE to Up Your Game from Kingsford Charcoal.

Print Friendly, PDF & Email

Comment on this Recipe

4 Responses to “Caramelized Onion Beef Sliders Recipe”

Leave a Comment