Preheat oven to 400 degrees.
Place your gluten free graham crackers in a plastic bag and crush them until you have some crumbs and larger (about ¼ inch) pieces. Combine in a mixing bowl with the almonds, honey and oil. Toss until the honey and oil coat the crumbs and almonds. Spread in an even layer on an ungreased baking sheet and bake for 10 – 15 minutes or until the mixture is crisp, fragrant and browned – it will crispy up a little more as it cools and should be a little clumpy. Let cool.
While the crumble is baking prepare the apples; core and cut into 1 inch chunks. Spray a large skillet with a lid with some gluten-free non-stick cooking spray and heat over medium heat. Add the apples, salt, brown sugar, cinnamon, nutmeg, lemon juice and vanilla and toss well to coat. Cover the skillet and let cook until the apples are softened, about 8 minutes, stirring once or twice. Remove the lid, increase heat to high and cook until the liquid has thicken up to a syrup and coats the apples. Let cool.
Mix the yogurt with the maple syrup. For each parfait place a layer of apples into a goblet or dessert dish, top with some of the yogurt and then add a handful of the crumble. Repeat the layers. I think this is best served while the apples are still warm.
Makes 4 large or 6 smaller parfaits.