Take apples (2 large) and cut them into halves. Clean and remove the core. Then divide by 2 more, getting quarters. Send in the oven with a temperature of 160 degrees for 1 hour.
In principle, you can do it in the microwave (15 minutes), but then we do not evaporate unnecessary liquid and marshmallows can be loose in the end and not freeze! Therefore, I strongly recommend to bake apples for the right marshmallow!!!