Make the candied walnuts:
Place a sheet of parchment paper on a cookie sheet and lightly spray with cooking spray. Set aside.
In a medium non-stick skillet over low heat, melt the butter. Add the granulated sugar followed by the walnuts and splash of vanilla extract. Stir to coat the walnuts. Increase the heat to medium and cook for about 5 minutes stirring THE ENTIRE TIME until all the sugar is melted and the walnuts are well coated with sugar.
Transfer the candied walnuts immediately to the sheet of parchment paper. With a spatula and moving quickly (quickly is key, otherwise the walnuts will cool into a big clump) separate the walnuts as best you can. Allow them to cool completely, and then finely chop. Set aside in a bowl until ready to use.
Bake the cake:
Preheat oven to 350 degrees F. Butter and flour a 9” bundt pan.
To a medium bowl, add flour, sugar, baking soda, and salt. Whisk quickly with a fork to combine; set aside.
In a bowl of an electric mixer fitted with a paddle attachment over medium/high speed, (hand mixer works here as well), mix the unsalted butter, coconut oil, and granulated sugar until combined, about 2-3 minutes.
Add the eggs one at a time, beating well after each addition. Add the mashed bananas, vanilla and coconut extract. Mix until combined. Stop the mixer and scrape to incorporate ingredients.
Turn the mixer on to low speed and add the flour mixture, alternating with the buttermilk, starting and ending with the flour. Mix until moistened. If you see flour bits, it’s fine. Remove bowl from mixer and gently fold in the candied walnuts and sweetened coconut flakes.
Pour the batter into prepared bundt pan. Bang the pan once or twice on the counter to help even out the batter and get rid of air bubbles.
Place in the oven and bake for 35-45 minutes (depending on altitude) or until a toothpick inserted in the center of each load plan comes out clean. Cool in the pan for 5 minutes, then transfer to a wire rack to cool completely. As the cake cools, make the glaze.
Make the glaze:
In a medium bowl, combine the confectioners’ sugar, condensed milk, coconut milk, Coco Lopez, and vanilla extract. Whisk with a fork until combined. Add more confectioners’ sugar if you prefer a thicker glaze or more coco lopez if you prefer your glaze on the thinner side. Drizzle on top of cooled cakes. Top with toasted coconut if desired.
Banana Coconut Cake adapted from: Spoonful of Flavor