Cinnamon Crumble Coffee Cake Muffins

Ingredients

• 1 tsp vanilla extract
• 1/2 cup unsalted butter, melted
• 2 tsp baking powder
• 1/4 cup powdered sugar
• 1/4 tsp baking soda
• 1/3 cup vegetable oil
• 1 1/2 cup all-purpose flour
• 1/2 cup packed light brown sugar
• 1/3 cup packed light brown sugar
• 1/3 cup granulated sugar
• 1/4 cup sour cream
• 2 large eggs
• 1/4 tsp salt
• 1 tsp ground cinnamon
• 1 tsp milk
• 3/4 cup whole milk