• Cupcakes:
• Preheat oven to 400 F.
• Line cupcake pan.
• Combine all ingredients (except walnuts) in a stand mixer and beat until combined.
• Fold walnuts in.
• Fill cupcake liners 1/2 - 2/3 full.
• Reduce heat to 375 F.
• Bake for 15-18 minutes until toothpick comes clean.
• Remove from oven and transfer cupcakes to cooling racks to finish cooling.

Frosting:

• Add freeze dried banana slices to a food processor and blend until you have a fine dust.
• Cream butter with mixer,
• Add vanilla.
• Slowly add banana and confectioners' sugar and beat until fluffy.
• Add heavy cream a tbsp at a time if needed to reach desired consistency.
• Use a bag or decorator tool to pipe frosting onto cooled cupcakes.
• Sprinkle with additional walnuts.