One Pot Lemon Pasta with Greens and Sundried Tomatoes

whole grain spaghetti (or gluten-free pasta of choice)

small onion (or 2 shallots), thinly sliced

garlic cloves, thinly sliced

greens, chopped (such as kale, swiss chard, or spinach)

fine sea salt

pepper

water

marinated sun-dried tomatoes, chopped

zest and juice of 1-2 lemons*

crushed red pepper and vegan parmesan for topping (optional)