Preheat oven to 350ºF.
In a large bowl, beat 1 cup granulated monk fruit with butter until light and fluffy, about 5 minutes. Beat in egg and molasses.
In a medium bowl, stir together almond flour, glucomann powder, xanthan gum, lupin flour, collagen peptides, baking soda, and spices. Add to butter mixture and blend well.
Fill a shallow plate with granulated sugar. Break off walnut-size pieces of dough and roll into balls; roll balls in more granulated monk fruit.
Arrange on a greased cookie sheet, press with the bottom of a glass, and bake until golden brown, about 12 minutes. Cool completely on the baking sheet.
For lemon drizzle: combine powdered monk fruit with lemon juice, vanilla, and cream cheese and stir until smooth. Scoop into a small ziplock bag and cut a small corner off to use it as a piping bag. Drizzle glaze over cookies once they have cooled.