These gluten free, flourless Monster Cookies are packed with gluten free oats, M&Ms, chocolate chips and peanut butter. Hit 'US Customary' under the ingredients list to view in cups - though I'd recommend using weighing scales for accuracy.
Preheat the oven to 190C / 170C Fan / Gas Mark 5 / 350F. Line two large baking trays with baking paper.
Add half the oats to a food processor and blitz until they are fine. Leave the other half of the oats as they are.
Add the peanut butter, butter, sugars and vanilla extract to a large mixing bowl and beat with an electric whisk to cream together.
Add the eggs and beat again to combine. Do not over-mix - just mix enough until the egg is incorporated into the batter (see step-by-step photos in the blog above).
Add the blended oats, whole oats, baking powder, M&Ms and chocolate chips. Use a wooden spoon to mix together until combined - the chocolate and M&Ms should be evenly distributed, with no dry oats visible.
Use an ice-cream scoop to scoop balls of cookie dough onto the baking sheets, with a couple of inches between them. Press them down slightly to around 1/2-inch thick.
Bake in the hot oven for 10-12 minutes until golden brown. then remove from the oven and leave to cool for at least 10-15 minutes on the tray before moving. You can gently press a few extra M&Ms and choc chips on top while still hot if you like.
Notes
Weighing Scales vs Cups: You can toggle this recipe card to convert the ingredients into cups - I have weighed each item individually to ensure the conversion is accurate as possible. However, I always recommend using weighing scales - these are cheap to buy and much more accurate. And in gluten free baking, a tiny variation can make a huge difference!
Step-by-Step Photos: Check out the blog post above for step-by-step photos to guide you through how this cookie recipe should look at each stage.
Storing: Check out the Frequently Asked Questions above this recipe card and blog post above for more information on gluten free oats, which M&Ms are gluten free, storing and freezing these Monster cookies.
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