These pastrami sandwich sliders are quick and easy, make-ahead, and reheat really well so they’re perfect for meal prep or gatherings.
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FRENCH DIP SLIDERS INGREDIENTS:
►1 Tbsp olive oil
►2 Tbsp butter
►1 large or 2 medium yellow onions, thinly sliced
►1/4 tsp sugar
►1 oz packet au jus mix, made according to package instructions
►3 cups water, to make the sauce, or to taste
►16 Hawaiian sweet rolls
►1/4 cup mayo 1 lbs deli pastrami or roast beef, thinly sliced
►9 slices mild provolone cheese (not aged)
►2 Tbsp unsalted butter, melted, plus more to grease baking sheet
►1 Tbsp sesame seeds