Creamy Vegan Zucchini Bisque

medium zucchini or about 2 larger zucchini

bell pepper (I usually use red)

medium tomatoes or about 1 ½ cup cherry tomatoes

medium potatoes peeled and cut into large cubes (about 2 cups cubed)

water (enough to just cover over the veggies by about 1/4 inch)

pesto or a handful of fresh basil plus 1 TBS olive oil

Salt

Pesto to garnish (optional)