Cinnamon Swirled Banana Muffins - The BakerMama

Ingredients

• 1/2 cup (1 stick) unsalted butter, melted
• 1/2 cup granulated sugar
• 1 large egg
• 1/2 teaspoon vanilla
• 1 cup all-purpose flour
• 1/2 teaspoon baking soda
• 3 overripe medium bananas, mashed (about 1 cup)
• 1 very ripe banana, for garnishing
• 3 tablespoons unsalted butter, melted
• 3 tablespoons granulated sugar
• 3 tablespoons dark brown sugar
• 2 tablespoons ground cinnamon