Preheat oven to 350°. In top of a double boiler or a metal bowl over simmering water, whisk the first 5 ingredients until blended; stir in cranberries. Cook and stir until mixture is thickened, 15-20 minutes. Remove from heat; stir in vanilla., Meanwhile, in a large bowl, cream butter and sugar until light and fluffy. Beat in vanilla. In another bowl, whisk flour, oats, salt and baking soda; gradually beat into creamed mixture. Stir in coconut. Reserve half of the dough for topping. Press remainder onto bottom of a greased 13x9-in. baking dish. Bake until set, 8-10 minutes., Spread sour cream mixture over crust; crumble reserved dough over top. Bake until filling is set and top is golden brown, 25-30 minutes. Cool in pan on a wire rack. Cut into bars.