Banana Bread with Cinnamon Crumble Topping

Preheat oven to 350. Butter and flour a 9x6x3 metal baking pan. Whisk 1½ cups of flour, 1 cup sugar, 1 tsp cinnamon, baking soda, and salt in medium bowl. Whisk next 5 ingredients in a large bowl until smooth. Add dry ingredients; stir to blend. Transfer batter to pan. Mix 2 tbs sugar, 1 tsp cinnamon, and brown sugar, sprinkle over batter. Bake bread until tester inserted into center comes out clean (about 1 hour. Cool bread in pan for 30 minutes. Turn pan on its side; slide out bread, being careful not to dislodge topping. Turn bread right side up and cool completely.