Step 1: Preheat and Prepare the Pan
Preheat your oven to 350°F (175°C). Grease and line a loaf pan with parchment paper.
Step 2: Grate the Zucchini
Grate the zucchini and squeeze out excess moisture using a clean kitchen towel. Set aside.
Step 3: Mix Dry Ingredients
In a large bowl, whisk together flour, baking powder, baking soda, salt, and cinnamon until evenly combined.
Step 4: Combine Wet Ingredients
In another bowl, beat the sugars, eggs, melted butter, and vanilla until smooth. Stir in mashed bananas and Greek yogurt.
Step 5: Fold in Zucchini and Combine Mixtures
Add the grated zucchini to the wet mixture. Gradually fold the dry ingredients into the wet mixture until just combined.
Step 6: Bake the Bread
Pour the batter into the prepared loaf pan. Bake for 50 minutes or until a toothpick inserted in the center comes out clean.
Step 7: Prepare the Coffee Frosting
Beat the softened butter with powdered sugar. Slowly drizzle in the cooled coffee while whisking until smooth and creamy.
Step 8: Frost and Serve
Let the loaf cool completely. Spread the coffee frosting on top. Slice and enjoy the caffeinated goodness!