Cream Cheese Filled Crumb Cupcakes - Cupcake Fanatic

Ingredients

• 1¼ cup cake flour
• ½ cup granulated sugar
• ¼ tsp. baking soda
• ¼ tsp. salt
• 6 tbsp. coconut oil or butter
• 1 large egg
• 1 egg yolk
• 1 tsp. vanilla extract
• ⅓ cup sour cream
• 6 oz. softened cream cheese
• 1/4 cup granulated sugar
• 1/2 teaspoon vanilla
• 2 1/2 tablespoons granulated sugar
• 2 1/2 tablespoons light brown sugar or muscovado sugar
• ¾ tsp. ground cinnamon
• ⅛ tsp. salt
• 5 tbsp. coconut oil, melted or butter
• 2/3 cup all purpose flour