Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a medium-sized bowl, whisk together flour, baking soda, salt, and cinnamon.

In a large bowl, cream together softened butter, granulated sugar, and brown sugar with a hand mixer until fluffy.

Beat in egg and vanilla extract, then mix in mashed ripe bananas until smooth.

Gradually fold in the dry mixture until just combined; if using, fold in the chopped walnuts.

Drop rounded tablespoons of dough onto the prepared baking sheet, leaving space between each cookie.

Bake for 10-12 minutes until edges are lightly golden; let cool for about 5 minutes.

While cookies cool, prepare the cream cheese glaze by mixing cream cheese, powdered sugar, milk, and vanilla until smooth.

Drizzle the glaze over cooled cookies and serve.