Easy Homemade Sloppy Joes

Ingredients
1 tbsp butter, (or olive oil)

1 pound ground beef

1/2 cup onion, , finely diced

4 cloves garlic, , minced

8 oz can tomato sauce

2 tbsp tomato paste

1/4 cup brown sugar

2 tbsp Worcestershire sauce

2 tsp yellow mustard

1/2 tsp onion powder

1/4 tsp paprika

1/2 tsp each salt and pepper

1/2 tsp red pepper flakes, (optional)

4 hamburger buns