Yes, you can steam your own lentils. Note that steaming your own lentils will add some extra prep time to this lentil apple salad recipe. Dried lentils are typically cheaper than those that are already prepared, so steaming them can be a good option if you have the time! To steam your own lentils, place them in a steaming basic in a pan. Fill the pan with enough water to reach the bottom of the steamer basket. Put the lentils in the basket, and bring the water to a boil. Leave the stove on medium-high heat and allow the lentils to steam for up to 15 minutes. You will want to check them throughout the cooking process, and take them off of the heat when they are tender to the touch. Allow the lentils to cool before making the lentil apple salad.