Cut watermelon into cubes. I like to cut in half and then cut in large circles. I then remove the rind and then use a large knife to cut it as if I was cutting a round pizza in squares. You get perfectly square pieces.
Make pepitas pesto. Follow recipe in link.
In a large bowl mix spinach, watermelon and pesto.
In a separate bowl mix the olive oil, balsamic vinegar and sea salt.
Mix well and pour over salad.
Mix well and serve. I like to add a little extra balsamic and oil for a prettier presentation
Recipe by Whole Lovely Life at https://www.wholelovelylife.com/spinach-watermelon-pesto-salad/