• Preheat oven to 350 °F
• Wash your orange and use a fine grater or a citrus zester to grate 1 tablespoon orange zest. Set aside.
  1 orange
• Chop your orange into chunks and puree it (including what is left of the peel, but removing any seeds) in a blender or food processor. Ensure that there are no chunks of orange peel left.
• In the bowl of your mixer combine the pureed orange, egg and honey. Beat for 5 minutes using the paddle attachment of your mixer. Add in the oil and beat for an additional 2 minutes.
  1 egg, large, ½ cup honey, ½ cup vegetable oil
• In another bowl combine all of your dry ingredients and whisk together. Add half the dry ingredients to your mixer bowl and beat at low speed until combined. With the mixer speed on low, slowly pour in the orange juice and then add the remaining flour. Next stir in the chopped melomakarona and walnuts and mix until just combined.
  ½ cup orange juice, ½ cup chopped melomakarona cookies, 1½ cup all purpose flour, 1½ tsp baking powder, ½ tsp baking soda, ½ tsp cinnamon, ½ tsp salt, ½ cup chopped walnuts

Prepare the melomakarona streusel topping

• Add your melomakarona to your blender or food processor and process until you have made a coarse crumb.
  4 melomakarona cookies
• Combine all of the topping ingredients together and use a fork to mix them well.
  ¼ cup walnuts, 4 tbsp melted butter, 2 tbsp flour, 1 tbsp honey, 1 tbsp orange zest, ½ tsp cinnamon

Assemble your muffins

• Line the muffin tray with paper liners. Divide the muffin batter evenly, and then top with the melomakarona streusel topping, dividing that evenly as well.
• Bake in middle rack of your oven for 18 - 20 minutes or until a toothpick inserted into the center comes out clean.
• Allow to cool, and enjoy!