Step 1

Preheat oven to 180C. Brush a 20 x 30cm (base measurement) lamington pan with melted butter to lightly grease. Line the base and 2 opposite long sides with non-stick baking paper, allowing it to overhang.

Step 2

Combine the muesli, condensed milk, choc bits and walnuts in a large bowl. Spoon into the prepared pan and smooth the surface.

Step 3

Bake in preheated oven for 30 minutes or until golden brown and set. Set aside for 30 minutes to cool. Cut into rectangles to serve.