Step 1

Preheat the oven to 350°F.

Step 2

Butter the bottom of a baking sheet with softened butter. Set aside.

Step 3

Heat the olive oil in a medium sized saute pan over medium high heat. Add the onions. Sauté for ~3 minutes, then add in the ground beef. Cook, breaking up the meat, for another 6-7 minutes or until the meat is no longer pink. Drain any excess fat.

Step 4

Add the garlic, Worcestershire, mustard, salt and pepper and stir for another minute.

Step 5

Slice the rolls in half. Place the bottom rolls down on the prepared baking sheet.

Step 6

Whisk together the melted butter with the salt and garlic powder.

Step 7

Place 8 slices of cheese down, followed by the meat on top, and then the remaining cheese on top of beef. Try to pack the ground beef together by just patting it down gently with a wooden spoon. It will feel a little messy, but the cheese will keep everything locked in!

Step 8

Cover with top layer of buns. Brush the buns with the melted butter mixture. Add the sesame seeds all over the tops.

Step 9

Bake for 12-15 minutes or until warmed through and the cheese is melted.

Step 10

Meanwhile, whisk together the ingredients for the sauce in a bowl until combined.

Step 11

You can brush the rolls with a little more butter once they come out of the oven, if needed. Cut and serve the sliders with the burger sauce and enjoy!