Spinach and Olives

1/2 pack frozen spinach, defrosted and squeezed dry
2 tbsp vegetable oil
10 pitted black olives, halved
4 sundried tomato halves, chopped
1 red onion, peeled and chopped
1/2 lemon, juiced
Salt and pepper

Heat the oil in a frying pan, add the spinach and stir until heated through. Add the olives, tomatoes, red onion and lemon juice, stir. Season with salt and pepper.