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In a skillet, cook the ground beef over medium heat until browned. Drain any excess fat.
Add the chopped onion, Worcestershire sauce, ketchup, mustard, salt, and pepper. Stir well and cook for another 2 minutes. Set aside to cool.
Prepare the Garlic Parmesan Butter:
In a small bowl, combine the melted butter, Parmesan cheese, minced garlic, chopped parsley, olive oil, and salt. Stir to combine and set aside.
Assemble the Bombs:
Slice the slider buns or dinner rolls in half, keeping them attached.
Place a spoonful of the cooled cheeseburger filling on the bottom half of each bun.
Sprinkle shredded cheese on top of the filling.
Place the top half of the bun on top and gently press down to seal.
Bake the Bombs:
Preheat your oven to 375°F (190°C).
Place the assembled buns in a baking dish and brush the garlic Parmesan butter generously over the top of each bun.
Bake for 15-20 minutes, or until the buns are golden brown and the cheese has melted.
Serve:
Garnish with additional chopped parsley and serve warm with dipping sauces like ketchup or mustard.
Serving and Storage Tips:
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