If your caramel is too thick, stir in 1-2 tablespoons of heavy cream while it’s still warm. If you’re using it after it has cooled, warm it in the microwave for 15-30 seconds to liquify. If your caramel is too runny, cook it for another 5-10 minutes until it thickens up more. Keep in mind that caramel continues to thicken significantly as it cools so you want the consistency to be quite runny when you’re cooking it.