Step 1: Prepare the Oven

Preheat your oven to 350°F (175°C).

Grease a 9×5-inch loaf pan or line it with parchment paper.

Using quality loaf pans and premium cookware sets helps the bread bake evenly with a tender crumb and golden crust.

Step 2: Mix the Dry Ingredients

In a medium bowl, whisk together:

• Flour
• Baking powder
• Baking soda
• Salt

Whisking ensures the leavening agents are evenly distributed for a light, fluffy loaf.

Step 3: Prepare the Wet Ingredients

In a large mixing bowl combine:

• Mashed bananas
• Greek yogurt
• Eggs
• Melted butter
• Brown sugar
• Granulated sugar
• Vanilla

Mix until smooth and creamy.

The Greek yogurt adds moisture while reducing the amount of fat needed, creating a healthier loaf without sacrificing texture.

Step 4: Make the Batter

Gradually fold the dry ingredients into the wet ingredients.

Mix only until combined.

Overmixing develops gluten and can make the bread dense instead of tender.

In a small bowl combine:

• Brown sugar
• Cinnamon
• Melted butter

This mixture creates the signature marble swirl.

Pour half of the batter into the loaf pan.

Sprinkle half of the cinnamon mixture.

Repeat with remaining batter and cinnamon mixture.

Use a butter knife to gently swirl through the batter, creating beautiful marble patterns without overmixing.

Step 5: Bake and Cool

Bake for 50–60 minutes, or until a toothpick inserted into the center comes out clean.

Allow the loaf to cool in the pan for 10 minutes before transferring it to a cooling rack.

Slice once completely cooled for clean marble layers.