In a medium bowl, combine ingredients through cinnamon. Using an electric mixer, cream butter and both sugars until incorporated. Add egg and vanilla, mix thoroughly. Add oat mixture and mix until just combined. Fold in seeds and chocolate chips.
Drop large teaspoons of batter onto 2 ungreased cookie sheets, about 1 inch apart. Bake for 13-15 minutes or until golden. Let cookies rest on cookie sheets for 2 minutes, then cool on wire racks.
Craving more veg-friendly recipes? Shop our collection of vegetarian and vegan cookbooks, including our new Vegan Thanksgiving and Vegan Christmas cookbooks!