Coffee Cake Snickerdoodle Cupcakes - Cupcake Fanatic

Ingredients

• 1/2 C Light brown sugar
• 1/2 C All-purpose flour
• 3 tsp Cinnamon
• 3 tbsp Unsalted butter – melted
• 1 pk Vanilla cake mix
• 1 pk (3.4 oz) Instant vanilla pudding
• 3 Large eggs
• 3/4 C Milk
• 1/2 C Oil
• 3/4 C Light sour cream
• 2 tsp Pure vanilla extract
• 1 tbsp Sugar
• 1/2 tsp Cinnamon
• 1 1/2 C (3 stickers) Unsalted butter – at room temperature
• 1/4 C Light brown sugar
• 3 C Powdered sugar
• 2 tsp Cinnamon
• 1/2 tsp Pure vanilla extract
• 3 tbsp Heavy whipping cream