Easy, 5-Ingredient Creamy Carrot Tomato Vegan Pasta Sauce

medium vine-ripe tomatoes (, quartered)

medium-large orange carrots (, diced into large pieces)

medium white onion (, diced into large pieces)

garlic (, minced)

water

olive oil

raw cashews (, soaked in water for 2-3 hours (optional, use for creamier pasta sauce))

stems celery (, diced into large pieces (optional))

salt (, to taste)

red crushed pepper ((optional))

freshly ground black pepper ((optional))