Beat eggs and sugar in a stand mixer until light and fluffy. Mix in maple syrup and vanilla extract. Whisk in peanut butter until mixture is well combined. Mix in spelt flour. Refrigerate batter 30 minutes to 1 hour.
Preheat oven to 350 degrees and line two baking sheets with parchment paper.
Scoop out 2-inch-sized balls of dough onto prepared baking sheets. Flatten slightly with a fork or the palm of your hand, then top with sea salt. Bake 12 to 15 minutes. Let cookies cool on baking sheet.
Recipe by Juggling Real Food and Real Life at https://jugglingrealfoodandreallife.com/2016/10/sprouted-peanut-butter-cookies.html