Preheat oven to 325 degrees and grease or line muffin tin.
Combine the almond flour, baking soda, and sea salt in a large bowl. Combine eggs, olive oil, honey, and apple cider vinegar in a medium bowl. Stir wet ingredients into dry ingredients, then fold in the walnuts.
Using a large scoop, fill muffin cups ¾ full.
Bake for 20 minutes or until golden brown and toothpick inserted in center comes out clean. Cool on a wire rack.