Crushed red pepper flakes (optional), for serving
Fresh minced parsley (optional), for serving
Freshly grated Parmesan cheese (optional), for serving
8 oz. spaghetti noodles, broken in half
3 cups beef broth
1-2 tsp. sugar, optional
1/4 tsp. dried thyme
3/4 tsp. dried oregano
1 tsp. dried basil
1/2 tsp. balsamic vinegar
1 tbsp. tomato paste
3 cups marinara sauce, homemade OR 1 (24-ounce) store-bought jar
Salt and freshly ground black pepper, to taste
3 cloves garlic, minced
1 pound lean ground beef