Step 1: Preheat and Prepare
Preheat the oven to 350°F (175°C). Grease and line a loaf pan with parchment paper.
Step 2: Mix Dry Ingredients
In a bowl, combine flour, baking soda, and salt. Set aside.
Step 3: Prepare Wet Ingredients
In another bowl, beat eggs, sugar, melted butter, vanilla, and Greek yogurt until smooth. Stir in mashed bananas and chopped apples.
Step 4: Combine Wet and Dry
Gradually add the dry ingredients to the wet mixture, stirring until just combined.
Step 5: Bake
Pour the batter into the prepared loaf pan. Bake for 50 minutes, or until a toothpick comes out clean. Let cool.
Step 6: Make Coffee Syrup
In a saucepan, combine brewed coffee and butter. Stir until smooth, then add powdered sugar and vanilla extract.
Step 7: Drizzle and Serve
Drizzle the coffee syrup over the cooled banana bread. Slice and serve.