1Heat oven to 425ºF. Spray 2 cookie sheets with cooking spray.
2In large bowl, stir Bisquick mix, toffee bits, 1/4 cup sugar, the whipping cream, vanilla, egg and bananas until soft dough forms.
3Drop dough by 10 heaping tablespoonfuls onto cookie sheets (5 per cookie sheet). Brush tops with milk; sprinkle with 2 tablespoons sugar. Refrigerate second cookie sheet while first cookie sheet bakes.
4Bake 11 to 13 minutes or until golden brown. Serve warm.