Preheat the oven to 350. Using a sharp knife, cut off the top 1/2 inch of each apple. Then using a coring tool, remove the cores. Then using a small scoop, scoop out about 1/3 of the meat of each apple. Place the apples in a 10 inch skillet.
In a medium bowl, mix the brown sugar and cinnamon and place by spoonfuls into the bottom of each apple cup. Then, once that bowl is empty, in the same bowl, mix the oats, flour, butter, salt and orange zest together. Use your fingers and crumble the mix together, then pack by spoonfuls into the remaining space in the top of each apple. Once full, make sure each apple is up right in the pan.
Mix the Orange juice, honey and orange zest together in a small bowl. Gently pour the mixture into the bottom of the pan and place the skillet in the oven on the center rack.
If you have extra filling left, sprinkle it over the top of the apples in the pan.
Bake for 30-40 minutes until the apples are easily pierced with a knife. Drizzle the pan juices over the apples before serving.