Preheat oven to 350°. Generously grease a 10-inch Bundt pan with non-stick spray. Set aside.
In a large microwave-safe mixing bowl, melt butter for 30 seconds. Add bananas, milk, eggs and remaining four ingredients. Using an electric mixing, beat on medium speed until all ingredients are well combined and smooth.
Add flour and next three ingredients, blend with mixer until well combined, but do not overbeat. Fold in 1/2 a cup of mini chocolate chips. Pour batter into greased Bundt pan and bake for 55-60 minutes, or until cake tester comes out clean.
While cake is cooling, prepare the glaze. Combine all three ingredients in microwave-safe bowl. Warm in microwave until smooth and slightly runny, about 30 seconds. Stir well, drizzle over the cake.
Allow cake to cool in pan on wire rack. Once cooled, invert onto cake serving platter and cover with prepared glaze.