Vegan Nacho Cheese Sauce: Blend all ingredients except tomato in a food processor until smooth.
Add chopped tomato, if using, and pulse to get a chunky tomato consistency. Pour the mixture in a saucepan and cook on medium heat or serve cold.
Bean Taquitos: If baking, preheat oven to 350°.
Wrap the tortillas in paper towels and microwave for 1-2 minutes to make the tortillas pliable, if needed.
Spread refried beans onto a corn tortilla and roll tightly.
Baking method: Place seam side down on an oiled baking sheet or on tinfoil. Bake at 350° for 8-12 minutes on each side, or until crispy. Frying method: Heat canola oil to 350°. If you don't have a thermometer you can test the oil by dropping a couple of drops of water into oil. If it sizzles, it's ready. Place rolled tortillas seam side down and fry until golden brown. Flip until all sides are golden brown and crispy. Serve with vegan nacho cheese sauce.