Baked Stuffed Apples

This one came out soooo tasty - but it did fall apart while baking. I've some ideas for the next batch I make, including foil wrapping, not hollowing them out so much, using less water, and using a different variety of apple.

Mats
1/2c wild rice
1/4c red quinoa
1c vegetable stock
2Tb olive oil
1c shiitake mushrooms, stems removed, caps chopped to 1/2 inch pieces
1/4c red onion, finely diced
1Tb fresh sage or 1/2tsp ground dried sage
1/2c cream cheese
1/4c dried cranberries (sometimes marketed as "crasins")
4 Red Delicious (or other baking apple. My next batch will use Granny Smiths)
1/2c grated sharp white Cheddar cheese

Preheat the oven to 350F
In a small saucepan, heat 1c vegetable stock with 1c water to boiling. Add wild rice and quinoa, cover, turn heat to minimum and cook for 25 minutes, or until most of the liquid is absorbed. (Check the package directions on the wild rice, if it'll take longer than 25 minutes to cook, add the quinoa in the last 20 minutes of the rice's cooking time)
In a medium pan, heat the oil over medium heat. Add the onion and mushrooms and cook over medium-low for 7 minutes, stirring occasionally.
Add the cooked rice and quinoa to the onion/mushroom pan and cook for 5 minutes, stirring thoroughly.
Remove the pan from heat and stir in the cream cheese and cranberries
Mix very thoroughly.
Slice the apples in half through the stem.
Use a spoon to hollow out the apple halves, leaving 1/4 to 1/2 inch of apple flesh on all sides and bottom. Make sure to remove all the nasty core bits and seeds.
Spoon the rice mixture into the hollowed apples, mounding it slightly on top
Place the filled apple halves in a Pyrex dish and pour 1/2c water in the bottom of the dish *NOT* directly on the apples. (This is to heat the dish evenly. I've blown up two Pyrex dishes in my history of cooking and trust me, it is an annoying, long clean up).
Cover the dish tightly with aluminum foil.
Bake at 350 for 45 min.
Remove the aluminum foil and sprinkle the apple halves with the grated Cheddar cheese. Return to the oven uncovered for 15 minutes.