Stir together BBQ sauce, water, and tomato paste in a bowl then set aside.
Heat oil in a large, 12” skillet over heat that’s a touch above medium. Add chopped kale and shallots then saute for 2 minutes. Add smoked sausage then continue to saute until kale is tender and sausage is browned, 5-7 minutes. Add beans and BBQ sauce/water mixture then gently stir to combine.
Turn heat down to medium then cover skillet with a lid and simmer for 2 minutes, or until beans are warmed through, and then serve.