PREHEAT oven to 350°F. Beat butter and granulated sugar in large bowl with electric mixer on medium speed until light and fluffy. Add bananas, egg and lemon juice; mix until well blended. Mix flour, baking powder, cinnamon and salt. Gradually add to banana mixture, mixing well after each addition. Pour into greased 9x5-inch loaf pan.
BAKE 1 hour or until bread springs back when lightly touched. Cool 10 min.; remove from pan to wire rack. Cool completely.
DISSOLVE instant coffee in hot water in medium bowl. Add powdered sugar; beat until well blended. Drizzle over bread. Cut into 16 slices to serve.