These were awesome and were a real hit with my book group. So much so that the Sixth formers came to get some and usually they are not that bothered about the food. You can pretty much add in any biscuit or chocolatey bits other than M&Ms and I am definitely going to make this again for the book group.
M&M Oreo Cookie Bars (from Avery Cooks)
200g light brown sugar
1 tablespoon vanilla extract
125g plain flour
18 Oreo cookies
1/2 cup M&M's
Preheat the oven to 180C. Grease and line a 20cm x 20cm baking pan with baking parchment.
Melt the butter in saucepan and wait for it to cool a bit. Add the egg, brown sugar and vanilla and whisk until smooth.
Add the flour and fold in with a metal spoon. Stir in the Oreos.
Pour the batter into the prepared tin, smoothing the top lightly with a spatula.
Evenly sprinkle the M&Ms over the top, lightly pressing them down with your finger or a spatula.
Bake for about 20 to 22 mins, until a skewer comes out clean. Allow to cool in the pan for 30 mins before slicing.