Ingredients
| 1 | large beef roast |
| 2 Tablespoon | butter |
| 1/2 Cup | finely chopped onion |
| 1 Cup | ketchup |
| 1/2 Cup | chili sauce |
| 1/4 Cup | brown sugar |
| 1 Teaspoon | dry mustard |
| 2 Tablespoon | Worcestershire sauce |
Instructions
Roast the beef until done. Let it rest, and then slice thinly across grain and layer in a slow cooker. Boil the remaining sauce ingredients, and then pour over meat. Cook on low in a slow cooker. Serve on large buns.
