In chilled medium bowl, beat whipping cream with electric mixer on high speed until stiff peaks form. Place 1 cake layer bottom, cut side up, on serving plate. Spread 2/3 cup whipped cream over layer to within 1/4 inch of edge. Slice 1 banana; arrange on whipped cream, overlapping slices if necessary. Drizzle 1/4 cup butterscotch caramel topping over banana, spreading to coat slices. Sprinkle with 2 tablespoons pecans.