INGREDIENTS
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1 pound lean ground beef
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1/2 cup diced white onion
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1/2 cup seeded and diced green bell pepper
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1 (8 ounce) can tomato sauce
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1/2 cup ketchup
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2 teaspoons Worcestershire sauce
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2 teaspoons prepared yellow mustard
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2 teaspoons brown sugar
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1 teaspoon cumin
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1 teaspoon garlic powder
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1/2 teaspoon smoked paprika
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1/4 teaspoon crushed red pepper, or to taste (optional)
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fresh ground black pepper, to taste
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12 slider buns (I used King's Hawaiian Savory Butter Rolls)
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1-1/2 cups shredded cheese (I used sharp cheddar and Monterey Jack)
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2 tablespoons butter, melted
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1 tablespoon sesame seeds, or as needed