"Yield: approximately 6 servings..."
INGREDIENTS
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1 tablespoon olive oil
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1 pound lean ground beef
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1 cup chopped yellow onion
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1 tablespoon minced fresh garlic
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1 jalapeño, seeded and minced
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1 (14.5-ounce) can diced tomatoes
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1⁄4 cup ketchup
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1 tablespoon apple cider vinegar
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2 teaspoons Dijon mustard
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2 teaspoons kosher salt
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1 1⁄4 teaspoons chili powder
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1 teaspoon dried oregano
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1⁄4 teaspoon ground cumin
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1⁄4 teaspoon crushed red pepper
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1 1⁄2 cups shredded sharp Cheddar cheese, divided
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1 (8-ounce) package corn muffin mix, such as Jiffy
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1⁄2 cup whole buttermilk
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1 large egg, lightly beaten