I have made this recipe, including the crust, with my all-purpose gluten-free flour blend and it works beautifully. The flour mix ingredients may be printed via the link below.
½cupextra virgin coconut oil or butter, very soft or melted
For the filling
2eggs
1½cupssugar
½cupshredded, unsweetened coconut (optional)
¼cupflour
¼teaspoonground ginger
½teaspoonkosher salt
2cupsfinely chopped rhubarb
¼cupslivered almonds
Instructions
Cream together all crust ingredients. The dough will be fairly stiff. Press dough into a 7x11 or 9x9 pan (I use a glass Pyrex pan). Bake at 350 degrees F for 13-15 minutes, or until just cooked.
While the crust is baking, prepare the filling: Beat eggs, and then add the sugar, optional shredded coconut, flour, ginger, and salt. Gently stir in the rhubarb and almonds.
Spoon the filling carefully over the hot crust. Bake for 30- 35 minutes more. Cool completely before cutting into bars. I store leftovers, covered, in the refrigerator.