banana blueberry upside-down cake

Ingredients For banana blueberry upside-down cake

• 1 box

  yellow cake mix
• 3

  eggs
• 1/2 c

  mayonnaise
• 3/4 c

  milk (i use vanilla almond milk)
• 2 c

  blueberries, fresh or frozen
• 3

  bananas
• 3

  bananas
• 2 Tbsp

  butter
• 2 Tbsp

  butter
• 2 tsp

  pure vanilla extract
• 2 tsp

  pure vanilla extract
• 1/2 c

  brown sugar
• 1/2 c

  brown sugar
• GLAZE
• GLAZE
• 1/2 c

  powdered sugar
• 1/2 c

  powdered sugar
• 1-2 Tbsp

  heavy cream
• 1-2 Tbsp

  heavy cream
• 1/2 tsp

  pure vanilla extract
• 1/2 tsp

  pure vanilla extract