4 beef tenderloin fillets (1 1/4- to 1 1/2-inch thick) |
3 tablespoons melted butter or 3 tablespoons margarine, divided |
1 lb fresh mushrooms, cut into 1/4 inch slices |
1 tablespoon minced shallots or 1 tablespoon green onion |
1/2 cup burgundy wine or 1/2 cup dry red wine |
1 teaspoon butter or 1 teaspoon margarine, softened |
1 teaspoon all-purpose flour |
2 tablespoons burgundy wine or 2 tablespoons dry red wine |