Preheat a large frying pan or skillet on a high heat.
Rub chicken with a little oil. Season with salt.
Pop chicken into the pan and cook for 4-6 minutes on the first side.
While the chicken is cooking, puree the basil, garlic, cashews and 1/2 cup extra virgin olive oil in a food processor or with your stick blender until you have a chunky paste. Season with salt and a little lemon juice. Taste and keep seasoning until you’re happy.
Turn the chicken when well browned and cook on the second side for another 4-6 minutes or until cooked through.
Divide chicken between 2 plates and top with pesto. Serve with salad / veg.