Step 1: Prepare the Oven and Pan

• Preheat your oven to 350°F (175°C).
• Spray a 9×5-inch loaf pan with non-stick cooking spray or line it with parchment paper.

Step 2: Mix the Dry Ingredients

• Combine the flour, baking soda, and salt in a medium bowl and whisk until evenly blended.

Step 3: Cream the Butter and Sugar

• In a large bowl, use an electric mixer to beat the sugar and butter at medium speed until light and fluffy (about 1 minute).
• Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next.

Step 4: Add Wet Ingredients

• Mix in the mashed bananas, yogurt, and vanilla extract until fully combined.

Step 5: Combine Wet and Dry Ingredients

• Slowly fold the dry ingredients into the wet mixture, mixing gently until just combined. Avoid over-mixing to ensure a tender loaf.

Step 6: Fold in Mix-Ins

• Gently fold in the dark chocolate chunks and raspberries. Tossing the raspberries in flour helps prevent them from sinking during baking.
• Optionally, sprinkle extra chocolate chunks and raspberries on top for decoration.

Step 7: Bake

• Spoon the batter evenly into the prepared loaf pan.
• Bake for 50-60 minutes, or until a toothpick inserted in the center comes out clean.

Step 8: Cool and Serve

• Allow the banana bread to cool in the pan for 15 minutes.
• Transfer to a wire rack to cool completely before slicing and serving.