Ingredients:

• 1 tablespoon extra-virgin olive oil
• 1 pound ground beef
• 1 small sweet onion , diced
• 1/2 small green bell pepper , diced
• 2 cloves garlic , minced
• 1 tablespoon tomato paste
• 1/2 cup ketchup
• 1/3 cup water
• 1 tablespoon brown sugar
• 1 tablespoon Worcestershire sauce
• 2 teaspoons yellow mustard
• 1/2 teaspoon kosher salt
• 1/4 teaspoon black pepper
• 1/4 teaspoon red pepper flakes
• Toasted buns , for serving

 Method:

• Warm oil in a large nonstick skillet over medium-high heat. Add beef, onion, and bell pepper; breaking up the meat into crumbles with a wooden spoon. Cook for about 5 minutes until beef is cooked through and vegetables are tender. Stir in garlic and cook until fragrant, about 30 seconds. Drain off grease.
• Stir in tomato paste until thoroughly combined.
• Add in ketchup, water, brown sugar, Worcestershire, mustard, salt, pepper, and red pepper flakes. Stir well to combine.
• Cook over medium heat for 10 minutes until mixture has thickened.
• Remove from heat and serve on toasted buns and enjoy!