These are kind of fun. We went to the apple orchard (twice) this past week, so we have plenty of apples.
I don't have an apple corer. Just the ones that slice and peal, so I tried to use a knife to cut out the core, but it just got crazy. So I had to slice the apple in half, then cut out the core. Replace the core with a marshmallow, sprinkle with cinnamon and brown sugar. Put a tiny bit of butter and salt on top, bake at 350 degrees for 20 minutes. Serve with vanilla ice cream.