Betty Crocker's Banana-Chocolate Chip Coffee Cake

I made this for Dave to take to work for the holidays buffet.... I never got to try it, but he said it was yummy. I'll have to let you know if I get to make it again.

Ingredients:
Coffee Cake:
2 1/4 cups Bis-quick Mix
1 cup mashed ripe bananas (2 to 3)
1/2 cup semisweet chocolate chips
1/4 cup sugar
1/3 cup milk
2 tablespoons butter, softened
1/2 teaspoon sugar
1 egg

Glaze:
1 cup powdered sugar
1 tablespoon milk
1/2 teaspoon vanilla

Directions:
Heat oven to 375 degrees and Spray 8 inch square pan with cooking spray. In medium bowl, stir all coffee cake ingredients with a wire whisk or fork until blended. Spread in prepared pan. Bake 26 to 30 minutes until golden brown and toothpick inserted into the center comes out clean. Cool 30 minutes. In a small bowl, mix glaze ingredients until smooth (add extra milk 1 teaspoon at a time until thin enough to drizzle). Drizzle glaze over warm coffee cake, serve warm.