Preheat the oven to 350°F. Be sure to adjust the oven rack to the lower-middle position.
Grease a light colored 9×5 inch aluminum baking pan with softened butter and sprinkle an even layer of flour around the pan, shaking out any excess flour. Alternatively, line with parchment paper. Set aside.
Add the oil, sugar, eggs, banana, Biscoff, sour cream, vanilla and milk in a mixing bowl.
1/2 cup vegetable or canola oil, 1 cup granulated sugar, 2 large eggs, room temperature, 1 1/3 cup mashed overripe bananas, 1/2 cup creamy Biscoff spread, 1/4 heaping cup sour cream, room temperature, 1 Tbsp. (yes tablespoon!) vanilla extract, 2 Tbsp. whole milk
Mix until combined.
Whisk together the dry ingredients in another large mixing bowl.
2 cups all purpose flour, spooned and leveled, 1 tsp. baking soda, 1 tsp. salt, 1 tsp. ground cinnamon
Add wet into dry, folding just until combined.
Bake for ~60-65 minutes or until toothpick inserted in center comes out clean.
Cool completely.
Whisk together all ingredients for glaze.
3/4 cup powdered sugar, 2 Tbsp. creamy Biscoff spread, 2-3 Tbsp. whole milk, 1 tsp. vanilla, pinch of salt
Spread over cooled bread. Garnish with crushed up Biscoff cookies.
crushed Biscoff cookies to garnish (optional, but looks pretty!)