In a food processor or high speed blender, pulse together all the pesto sauce ingredients, until smooth. Transfer to a small jar and set aside.
Slice your tomatoes and mozzarella cheese into 1/4-inch thick slices.
Arrange arugula on a large platter as shown.
Arrange the tomatoes and mozzarella slices, as shown in the photos, then drizzle with your fresh pesto sauce to your taste.
Immediately serve and enjoy!