Slice the ends off the zucchini and peel off the outer skin – discard. Peel the zucchini into long ribbons and set aside.
Step 2
Add the walnuts to a dry skillet over a low/medium heat and toast gently for a minute or two until lightly golden. Set aside.
Step 3
Roughly chop the tomato and crush the garlic. Heat the olive oil in a skillet over a medium heat. Add the chopped tomato, garlic, anchovies, capers and lemon zest to the skillet and sweat for 3-4 minutes until tender and the anchovies have melted.
Step 4
Add the zucchini and spinach to the pan. Stir well and cook for 2-3 minutes until the zucchini is just tender and the spinach is wilted.