Preheat oven to 375 degrees.
In a large bowl, toss apples, blueberries, raw sugar, ground cinnamon, ground nutmeg and orange juice. Divide the fruit mixture evenly among 4 (8 oz) ramekins.
Using the same large bowl, whisk together the egg, flour, oats, caster sugar and melted butter. Divide the flour mixture evenly over the fruit.
Place ramekins on a baking sheet and bake for 30 - 35 minutes until golden and bubbly.