Roast Beef with Coffee Gravy

Makes 6 servings.

2 tablespoons butter
4 pounds chuck roast
1 tablespoon butter
Salt to taste
1 onion, chopped
6 cups brewed coffee
2 cups canned mushrooms
3 tablespoons cornstarch

Melt 2 tablespoons of butter in a large saucepan over medium high heat. Add the roast and sear on all sides until well browned; set aside.

In the same saucepan, melt the remaining butter, add the salt and onions and saut