• Get out and measure your ingredients.
  
• Prepare bundt pan. Stir together melted butter and cocoa powder in a small bowl to form a paste. Use a pastry brush to coat the bundt pan, then sprinkle with cocoa powder to coat.
  
• Take 1 of the eggs and crack it into a small bowl, whisk and set aside. You will be using ½ of this egg for the cake batter and ½ of this egg for the peanut butter cheesecake swirl.

Prepare cake batter

• In a medium mixing bowl, combine cocoa powder and chopped chocolate. Add boiling water and whisk together until smooth.
  
• Let cool for 10 minutes.
  
• Then, add sour cream and vanilla extract to the bowl.
  
• Whisk to combine.
  
• Using a stand mixer, cream butter and brown sugar.
  
• Add 2 eggs plus ½ of the whisked egg from step 3, to the bowl one at a time and mix on medium-low speed.
  
• In a separate bowl, combine flour, salt, baking soda, and peanut butter morsels.
  
• Slowly incorporate the bowl with flour and the bowl with chocolate, adding ¼ of each bowl at a time. Scrape the edges of the stand mixers bowl with a rubber spatula.
  
• Mix until well incorporated, about 1 minute.
  

Prepare peanut butter cheesecake

• In a medium mixing bowl, combine softened cream cheese, peanut butter, heavy whipping cream, remaining ½ of the whisked egg, vanilla extract, and confectioners sugar.
  
• Whisk until smooth.
  
• Preheat the air fryer to 310 degrees.
• Build your cake.
  
• Pour ⅓ of the cake batter into the bundt pan. Then, add ½ of the peanut butter cheesecake into the center of the bundt pan mold.
  
• Make sure the cake batter is visible on each side of the cheesecake.
  
• Top with remaining cake batter. Use the handle of a fork, wooden spoon or a chopstick, or a butter knife to swirl the cheesecake and cake batter together gently, careful not to overmix.
  
• Place the cake into the air fryer for approx 30 minutes.
  
• Check the cake to be sure it has finished cooking by inserting a toothpick into the center of the cake, if it comes out clean it is ready! The internal temperature of the cake should be between 185-195 degrees. Remove the cake from the air fryer and let cool.
  
• Once the cake has cooled, carefully flip the cake onto a plate and remove from the bundt pan. Prepare the peanut butter cream drizzle. Add all ingredients to a small mixing bowl.
  
• Whisk to combine.
  
• Drizzle with peanut butter glaze.
  
• Until covered.
  
• Garnish with chopped chocolate.
  
• Slice and serve.
  
• Enjoy every bite.