Annie's Pumpkin Chocolate Chip Muffins

Ingredients

• 4 Tbsp butter, melted
• 1/2 cup granulated sugar
• 1/4 cup packed brown sugar
• 2 large eggs
• 1 (14oz) can pure pumpkin
• 1/2 cup unsweetened applesauce
• 1 tsp pure vanilla extract
• 1 2/3 cup all purpose flour
• 1/2 cup oats
• 1/4 tsp baking powder
• 1 tsp baking soda
• 1 tsp pumpkin pie spice
• pinch of salt
• 3/4 cup milk or dark chocolate chips
• 3 Tbsp brown sugar
• 1 tsp cinnamon