Unbox Smarties into a bowl, set aside
Chop walnut, set aside
Mix dry ingredients in a bowl, set aside
Melt chocolate squares, set aside
Cream butter and sugar, beat in an egg, continue creaming. Beat in vanilla essence and melted chocolate.
Add in dry ingredients, a little at a time, then fold in Smarties, mini chocolate chips, walnut and chia seeds
Drop cookie dough per tbsp/per cookie scoop/per ice scream scoop, on greased sheet
Bake cookies on preheated 350 F for 8-10 mins, depending on your oven. Cool on rack.