Easy Sloppy Joes

Ingredients

• 1/2 teaspoon dried oregano
• 1/4 cup ketchup
• freshly ground black pepper (to taste)
• 1/2 teaspoon sugar
• 2 tablespoons tomato paste
• 1/2 teaspoon kosher salt
• 1 tablespoon Worcestershire sauce
• 1 teaspoon chili powder
• 1 tablespoon yellow mustard
• 1 green bell pepper (finely chopped)
• 1 1/2 pounds ground beef
• 1 medium yellow onion (finely chopped)
• 15 ounces no-salt-added tomato sauce
• 6 hamburger buns (depending on size)