Instructions

1. 1
   Combine the baking mix, egg, brown sugar, and spices in a bowl.
2. 2
   Rub the butter into the base mixture with your fingers. The mixture should not be sticky.
3. 3
   Line an 8 by 8-inch (20 by 20 cm) baking pan with parchment paper.
4. 4
   Press the base mixture into the bottom of the baking pan (you might want to press it up the sides a little).
5. 5
   Toss the sliced apples in the grapefruit or lemon juice, distributing the juice evenly.
6. 6
   Combine the cinnamon, ginger, nutmeg, baking mix, and brown sugar.
7. 7
   Toss most of the spice mix with the apples. Reserve the remaining spice mix.
8. 8
   Tip the lightly coated apples on top of the prepared base in the pan. Try to arrange the slices to have an even layer.
9. 9
   Sprinkle the remaining spice mixture on top of the apples.
10. 10
    Preheat oven to 375°F (190°C).
11. 11
    Bake for 30 minutes at 375°F (190°C).
12. 12
    After allowing it to cool, you can lift the slice out of the baking pan by the corners of the parchment paper and put it on a plate for easy slicing.