Preheat the oven to 375F and spray a baking dish with nonstick cooking spray. (I used a round 9" dish).
In a bowl, whisk the eggs, add in brown sugar, and mix well. Stir in the apple sauce, nonfat Greek yogurt, milk, honey and vanilla.
Gently mix in the oats, baking powder, cinnamon, and nutmeg. Once it’s all combined, fold in the cranberries and apples.
Pour the mixture into the baking dish.
In a small bowl, mix the white sugar and flour together, then add in the melted butter and stir until a crumble forms. Sprinkle the crumble on top of the batter.
Bake the oatmeal in the oven for 42-45 minutes. Start checking it around 30-35 minutes in case your oven burns hotter than mine.
Makes 6 large servings. I cut mine like you would a pie. Serve warm, and enjoy!