1/4cupfine maple sugar, plus more for topping *See Note 1 below
1/2 - 3/4teaspoonfine salt, if using salted butter reduce to 1/4-1/2 tsp.
1cupunsalted butter, melted and cooled to lukewarm
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Instructions
Heat oven to 350F. Line an 8-inch square pan with parchment paper, leaving extra at two opposite sides for lifting out.
In a bowl, whisk together the all-purpose and rice flours, the maple sugar and salt. Stir in the melted and cooled butter and stir to combine. Mixture will be moist, sand-like. Press dough evenly in to the bottom of the prepared pan. Bake until golden brown and set, 30-35 minutes. Remove to a cooling rack but while still warm, sprinkle evenly with additional maple sugar and slice, then allow to cool completely before removing from pan.
Notes
Note 1: If your maple sugar is not fine, run through food processor