Mash the banana until almost completely smooth but with tiny chunks remaining—this creates natural binding and moisture while maintaining better cookie texture than overmixing.

Lightly toast the old-fashioned oats in a dry skillet for 2-3 minutes before mixing to enhance their nutty flavor and create a more complex breakfast cookie profile.

Refrigerate the dough for at least 30 minutes to prevent excessive spreading and achieve chewier, thicker cookies with better-defined edges.

Fold in chocolate chips, dried fruit, and seeds in two separate additions—this ensures every cookie gets a balanced mix of each ingredient for consistent flavor in every bite.

Remove cookies from the oven when the edges are set but centers still look slightly underdone; they'll continue cooking on the hot pan and stay soft and chewy rather than becoming cake-like.