Preparation

• Preheat oven to 350˚F. Butter a rimmed baking sheet.
• Place a large skillet over medium/high heat with 1 tablespoon olive oil and 2 tablespoon butter. Add sliced onion and sauté over medium heat for 5 minutes until softened, stirring occasionally. Sprinkle with ¼ teaspoon sugar and sauté uncovered for 5 minutes until caramelized and golden, stirring often. Transfer to a plate.
• In the same pan, add 2 ½ cups water and scrape the pan to deglaze. Add the au jus seasoning (adding to taste) then bring to a boil, reduce heat and simmer according to package instructions. Add more water to taste if it’s too salty.
• Cut buns in half. Place the bottom half of dinner rolls on a buttered baking sheet and spread ¼ cup mayo. Layer folded slices of beef evenly over the rolls. Spread caramelized onions over your sliders. Cover the beef with sliced provolone.
• Place the top of buns over and brush the tops with 2 tablespoon melted butter then immediately sprinkle tops with sesame seeds. Bake uncovered at 350˚F for 12-15 minutes, or until cheese is melted and tops are golden brown.
• Cut through the buns with a serrated knife to separate into individual sliders. Serve with warm au jus dip.