combine bbq sauce, water and oil in a bowl. set aside. slice tempeh into 6 to 8 sandwich sized patties. place the tempeh patties in bbq sauce mixture and let sit for 10 minutes.
Heat a non stick skillet and lift the tempeh slices from the sauce (but save sauce) and place them in the pan. saute for 4 minutes over med heat, turning , until tempeh slices start to brown.
reduce heat to low and pour sauce over the tempeh. cover and cook 5 minutes until sauce has almost disappeared and tempeh starts to turn brown.
Remove from heat and serve on bread, add favorite toppings