Preheat and prep: Heat oven to 350°F (175°C). Line a baking sheet with parchment paper.
Mix dry ingredients: In a large bowl, whisk almond flour, protein powder, cocoa, baking soda, salt, and coconut sugar until no lumps remain.
Add wet ingredients: Stir in the egg, melted coconut oil, milk, vanilla, and maple syrup (if using).
Mix until a thick, slightly sticky dough forms.
Fold in mix-ins: Add dark chocolate and chopped dried cherries. Stir just until evenly distributed.
Portion: Scoop 2-tablespoon mounds onto the baking sheet, spacing 2 inches apart. Gently flatten tops with your fingers; these spread minimally.
Bake: Bake 9–12 minutes, until the edges are set and centers look slightly soft.
Do not overbake.
Cool: Let cookies rest on the sheet for 10 minutes to firm up, then transfer to a rack to cool completely.