This recipe makes enough sauce for 4 servings, but any extra is great as a dressing for potato or other salads, or can be used as a vegetable dip, or spooned on baked potatoes. Serve these burgers as is, on a bun, or on French bread, adding the usual lettuce, tomato, and onion if you like.
- Chop green onion in processor. Add mayonnaise, sour cream, mustard, and Worcestershire sauce and blend. Add cheese and mix well. Season with salt and pepper. (Can be prepared 3 days ahead. Cover and refrigerate. Bring to room temperature before serving.).
- Prepare barbecue grill for medium-high heat cooking. Form beef into two 1-inch-thick patties. Season with salt and pepper. Grill to desired doneness, about 4 minutes per side for rare. Transfer to plates. Spoon sauce over and serve.