Preheat oven to 350ยบ.
In a mixing bowl, combine flour and 1 tbsp. of coffee spice with baking powder, salt, and baking soda.
Using a cheese grater, add 4 tbsp. of the butter into flour mixture. Mix butter into flour with your fingers until it comes together.
In another bowl, whisk banana into buttermilk. Pour into dry ingredients and stir until dough forms. Dough will be sticky.
Turn dough onto a floured surface and knead gently about 5-6 times.
Flatten dough into 1 inch thick rectangle about 4 x 6 inches. Using a pizza cutter, cut 1 inch strips, then cut strips into 1 inch pieces.
In a gallon zip bag, mix sugar and a tsp. of Baker's Brew. Close bag and shake to mix.
Roll each dough piece into a ball, add to bag, seal and shake to coat each piece. Reserve remaining sugar mixture.
Grease an 8 or 9 inch cake or Bundt pan and layer dough balls evenly.
In a small saucepan, melt remaining 8 tbsp. butter with brown sugar, 1/2 tsp. of sea salt and 1/2 tsp. Baker's Brew over medium-high heat.
Stir constantly until mixture bubbles, then reduce heat to medium-low.
Continue stirring until sugar is dissolved and mixture becomes a golden brown caramel.
Pour 3/4 of the caramel sauce over dough balls. Reserve remaining caramel sauce.
Place dough balls in oven and bake for 35 minutes.
Allow to cool for 20 minutes, then loosen sides with a knife and turn pan onto a serving plate.
Reheat caramel sauce and drizzle over bread.
Sprinkle bread with remaining sugar mixture plus 1/2 tsp. sea salt.
Pull pieces of bread apart with your fingers for a fun snack or dessert.