Banana Muffins

Bahan-bahan (12 porsi)

• 1/2 cup unsalted butter ((8 Tbsp), softened)
• 2/3 cup granulated sugar
• 2 large eggs (room temp, lightly beaten)
• 3 bananas (very ripe, coarsely mashed with a fork)
• 1 tsp vanilla extract
• 1 1/2 cups all-purpose flour (measured correctly)
• 1 tsp baking soda
• 1/2 tsp salt
• 1 cup semisweet chocolate chips (divided)