For the Cake:

• 1 box yellow cake mix (just the dry mix)
• 1 cup sour cream
• ½ cup vegetable oil
• 4 large eggs
• 1 tsp vanilla extract
• 1 tbsp instant espresso powder or instant coffee
• 1 tbsp hot water

For the Espresso Swirl:

• ½ cup brown sugar
• 1 tsp cinnamon
• 1 tsp instant espresso powder

For the Crumb Topping:

• 1 cup flour
• ½ cup brown sugar
• ¼ cup granulated sugar
• ½ tsp cinnamon
• ½ cup melted butter

For the Caramel Drizzle:

• ½ cup jarred caramel sauce (or homemade)