Preheat your oven to 350°F (175°C). Lightly grease baking sheets or use parchment paper.
In a medium bowl, whisk together the gluten-free flour blend, almond flour, powdered sugar, and salt.
In a separate large bowl, cream together the softened butter and eggs until light and fluffy. Stir in the vanilla extract.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. The batter will be thick.
Drop rounded tablespoons of batter onto the prepared baking sheets, spacing them about 4 inches apart. Flatten each mound slightly with the back of a spoon or your fingers.
Bake for 10-12 minutes, or until the edges are golden brown. The centers should still be slightly soft.
Working quickly while the cookies are still warm and pliable, use a spatula to carefully lift them from the baking sheet. Immediately shape them into cones using a cone mold or by wrapping them around a wooden spoon handle. Hold in place until they cool and set.
Allow the cones to cool completely on a wire rack before filling with ice cream.
Notes
Store cooled cones in an airtight container at room temperature for up to 3 days.