A few years ago, I started to modify my pumpkin pie recipe to make it with a graham cracker crust. If you've never tried it, I think it's much better than a traditional pastry crust. Now that I'm gluten free, I either need to buy GF graham crackers to make a crust (which can sometimes be difficult to find) or come up with another solution.
I've had good luck with a lot of nut-based baked recipes, so I decided to go in that direction for the pumpkin pie crust:
Preheat the oven to 350 degrees
1/2 cup flaked unsweetened coconut
1/2 cup pecans
1/4 cup all purpose gluten-free flour (I used Bob's Red Mill)
1/4 cup light brown sugar
1 teaspoon ground cinnamon
2 tablespoons butter
Put all the dry ingredients in a food processor and pulse until the mixture looks like coarse sand. Add in butter and pulse several times in short bursts until the crumbs are moist and begin to fall away from the sides of the bowl.
Pour the crumbs into a 9-inch pie dish and spread them evenly. Using your fingers, gently press the crumbs across the bottom and up the sides, about 2/3 of the way up.
Add pie filling and bake as directed.