"The EASIEST Cheeseburger Sliders recipe is perfect party food and they taste just like the popular slider burgers at White Castle!..."
INGREDIENTS
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1/2 cup mayonnaise
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2 tablespoons ketchup
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1 tablespoon yellow mustard
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24 slider rolls (I used King's Hawaiian)
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2 tablespoons olive oil
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1 medium onion, small diced (approximately 1 1/2 cups)
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2 pounds lean ground beef
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1 (1 ounce) package dry French Onion Soup Mix
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1 tablespoon Steak Seasoning (I used Montreal)
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10 slices American Cheese
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24 pickle slices
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2 tablespoons butter, melted
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1 tablespoons sesame seeds