Pumpkin puree is nothing more than plain cooked pumpkin that has been mashed. Be careful not to use canned pumpkin pie filling as that is not keto-approved. Look for canned pumpkins that says “100% pumpkin puree” or simply “canned pumpkin.” Check the ingredient list to be sure it is just one ingredient with no spices or sugar added.u003cbr/u003eu003cbr/u003eAlternatively, you can make a homemade version by mashing cooked pumpkin. Substitute in equal measurements.