1 lb ground beef
1 onion, diced
½ c ketchup
2 Tbsp yellow mustard
1 Tbsp cider vinegar
2 Tbsp packed brown sugar
sliced cheddar or American cheese
Brown ground beef; drain fat. Add onion; cook and stir 3 to 5 minutes or until onion softens slightly. Stir in ketchup, mustard, vinegar and brown sugar (these measurements are approximate, as I never actually measure mine. Just adjust to suit your taste). Reduce heat, cover and simmer for 20 minutes or until onion is fully cooked. Serve on toasted hamburger buns with cheese.
Note: These Sloppy Joes are sweet and barbecuey. If you prefer yours spicy, add some cajun seasoning, salt and Tabasco Sauce to taste.
To make this recipe vegetarian, replace the ground beef with Morningstar crumbles. To make it vegan, omit the cheese.