Preheat oven to 350°F. Line a baking sheet with parchment paper or greased foil. Set aside.
In a large bowl, whisk together all of the dry ingredients: oats, oat flour, flaxseed, cinnamon and salt.
In a medium bowl, whisk together the wet ingredients: coconut oil, peanut butter, maple syrup, coconut sugar and vanilla.
Pour the wet mixture over the dry mixture. Using a rubber spatula, stir and fold until well mixed. Fold in peanuts.
Using a medium cookie scoop, scoop and drop balls of cookie dough onto the prepared baking sheet, evenly spaced apart. Using a fork, flatten cookies to desired thickness. Press together any bits that come loose. Cookies won’t spread.
Bake for 12-15 minutes. Mine took 13 minutes. Place baking sheet on a cooling rack, allowing to cool for 10 minutes. Then, transfer cookies directly onto the rack to continue cooling completely before storing. Enjoy!
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*A Note on Homemade Oat Flour: If using homemade oat flour, make sure to blend the flour until very fine and sift the flour to remove coarse bits of oats that could create less than ideal results. Store until needed, then measure the amount required for the recipe.**Make sure to chop the peanuts truly finely. Leaving even medium-sized pieces of peanuts will make the cookies fall apart.Storing Instructions: Store in an airtight container for 1-2 weeks. Keep out of direct sunlight and away from heat sources.