Preheat oven to 350°.
Mix flour, baking soda, and salt in a medium-sized bowl and set aside.
Mix butter, sugar, lemon juice, and lemon zest until smooth and creamy.
Fold in oatmeal and almonds.
Cover and refrigerate dough for 1 hour.
Use a cookie scoop to make evenly-sized round cookies.
Leave a bit of room between the cookies because they do spread out a bit.
Top with almonds slices in a flower design if desired.
Bake for 12-14 minutes.
Once the cookies come out of the oven, let them sit on the cookie sheet for 15 minutes before moving them to a cooling rack or a plate. The center needs time to set before they are moved.