Form four 1/3 pound burgers. Heat oven to 250 degrees.
Mix together the coffee, brown sugar, cumin, salt, paprika, thyme and black pepper. Evenly rub the outside of all four burgers with the coffee rub.
Place the burgers in a non-stick, oven safe skillet and bake for 30 minutes or until the internal temperature is 155 degrees.
Remove the burgers to a plate.
Place the same skillet over medium high heat on the stove top and melt one tablespoon of butter in it.
Return the burgers to the skillet and sear on one side for 1 minute.
Flip the burgers over and sear on the second side for an additional minute.
Mix together the BBQ sauce and chipotle.
Top each burger with two slices of provolone cheese and serve them on the brioche buns with the lettuce and chipotle BBQ sauce.