Yes, someone actually asked me for a recipe. This one is dead easy.
Step 1: Pick a whole bunch of apples (or, I guess, you could buy them). For applesauce, you really want pretty tart apples (IMO) or it's so bland it doesn't end up tasting very good. Opinions vary about that, obviously.
Step 2: Take your apples, core them (and cut out any wormy bits) and stack them up in a big pot. Pour in enough boiling water that the top few apples are pretty much dry, but all the others are covered. Put a lid on and boil for about 10 minutes.
Step 3: Ladle out the apples and water and blend up in a blender, mixing in about 1/4c sugar (or more/less depending on your taste) and 1/8c lemon juice per 10 cups of apples/water. Food processor works too, of course.
Step 4: If you want to, can the applesauce so you can keep it around all year. You can find all kinds of articles online about how to do this, so I'm not going to describe the process here. If not, just put the 'sauce in the fridge and it'll keep for a week or two. You can also freeze it if you prefer.
Super, duper easy.