Mix flours, cornstarch, baking powder, and salt. In another bowl, combine melted butter, almond milk, vanilla, butter extract, and stevia; stir in maple syrup. Mix dry and wet ingredients until just combined.
Shape classic dough into a cylinder, wrap, and freeze. Prepare pumpkin dough similarly, shape into rectangle, and wrap. Roll pumpkin dough around classic, seal, and freeze.
Make chocolate dough by mixing flour, cocoa, cornstarch, baking powder, and salt. Combine melted butter, almond milk, vanilla, butter extract, stevia, pumpkin, and maple syrup; add dry ingredients. Shape into rectangle, wrap, and freeze with other logs.
Slice frozen logs into discs, arrange on baking sheets, and bake at 350°F for 5 minutes. Cool before serving.
Notes
Chill the dough logs thoroughly for clean slices and better texture.