Step 1: Preheat your oven to 350°F (175°C).
Step 2: In a mixing bowl, combine the egg, peanut butter, sweetener, vanilla, and water until smooth.
Step 3: Add baking powder and sea salt, stirring well to combine.
Step 4: Optional: Fold in chopped peanuts if desired.
Step 5: Drop rounded balls of dough onto a lined baking sheet.
Step 6: Press each cookie ball with a fork to create a crisscross pattern.
Step 7: Bake for 10-12 minutes until edges are golden.
Step 8: Cool on the baking sheet briefly before transferring to a wire rack.
