Created by ellie on July 10, 2017
Step 1: To make the coffee rub: mix all ingredients (coffee - salt) in a small cup or bowl. (****can be made up to one week ahead, stirred airtight at room temperature).
Step 2: To make the burgers: cook bacon in a skillet until crisp. Transfer to paper towels to drain and then break them in half. In a bowl mix together the chuck and sirloin. Form into 8 patties (3 1/2 - 4 inches round and 1/2 inch thick). Using your thumb make a slight indentation in center of each burger. ****can be made 8 hours ahead, covered separately and chilled.
Step 3: Prepare barbecue (medium high heat).
Step 4: Sprinkle 1 teaspoon of the coffee rub on top side of each burger. Place burgers, rub side down, on grill rack. Grill for 4-5 minutes or until charred; turn. Place 2 bacon slice halves atop each burger. Cook 3 minutes.Top each with 1 cheese slice. Cover and cook until cheese melts -- another minute.
Step 5: Place burgers atop bottom halves of buns. Top with onion and tomato slices. Spoon dollop of barbecue sauce over. Cover with bun tops and serve.