Brown Sugar and Chocolate Chip Pound Cake with Maple-Espresso Glaze

Preheat oven to 325 °F. Butter 12-cup Bundt pan. Spray pan generously with nonstick spray. Dust pan lightly with flour. Mix chocolate chips and 2 tablespoons flour in medium bowl. Sift remaining flour with baking soda, baking powder, and salt into another medium bowl. Using electric mixer, beat butter and brown sugar in large bowl until fluffy, about 3 minutes. Beat in vanilla extract and maple extract. Add eggs, 1 at a time, beating well after each addition. Mix in flour mixture in 3 additions alternately with buttermilk in 2 additions, beginning and ending with flour mixture. Fold in chocolate chip mixture. Transfer batter to prepared pan, spreading evenly. Bake cake until tester inserted near center comes out clean and cake begins to pull away from sides of pan, about 1 hour. Cool cake in pan on rack 30 minutes. Invert cake onto rack and cool completely.