Yes, it is a fact that pressure cookers consume more time to cook as compared to a stovetop. This is because the temperature is limited here. A dish that gets cooked in 10 minutes in a stovetop will take 15 to 20 minutes to get cooked in an electric pressure cooker. That being said, it will also depend upon the amount of liquid, the quantity of the food, size of the content and the temperature of the cooking elements.