How to Make It
Preheat oven to 350°.
Weigh or lightly spoon flaxseed meal and flour into dry measuring cups; level with a knife. Combine flaxseed meal, flour, oats, and baking soda in a medium bowl; stir with a whisk.
Place peanut butter, buttery spread, and sugars in a large bowl; beat with a mixer at medium speed until blended. Add banana, vanilla, and eggs, beating until blended. Add flour mixture, minichips, and sunflower seeds, beating until incorporated.
Drop by tablespoonfuls 2 inches apart onto baking sheets lined with parchment paper. Bake at 350° for 12 minutes or until edges of cookies are lightly browned. Cool completely on pans before serving.