This salsa dip is naturally thick and can be more or less chunky as you prefer. But if you need to thicken the sauce there’s a really easy way to make it happen. Add 1 tablespoon of corn starch to the salsa when cooking it on the stove to thicken it to a delicious thick sauce. Bring to a boil to make sure you get rid of the corn starch taste. That’s it. You should have a thick delicious salsa dip.