Giant Oreo Cookie

Is it just me, or do you think the idea of an Oreo is oh so much better than that of the taste of one?

Being a Brit, I was first lured to nibble the black and white cookie after seeing TV shows and movies where American kids eat them in a twist, lick, dunk fashion alongside a large glass of milk to wash them down with. As much as I like to crumble them into brownies or frosting for cupcakes, the texture is dry and really, they don’t taste of much. Shocking, I know, but true!

As with pretty much everything that you can possibly cook or bake, the Oreo is oh so much better made at home. You know I love to recreate confectionary at home and usually, I’m really striving to recreate the flavours and textures of the mass-produced version but with ingredients that I know and trust, and none of the nasty extra preservatives, anti-caking agents and goodness knows what else.

Like my Homemade Rolos, or Macarunchies (Crunchie Macarons). But with the Oreo, I decided to come up with a recipe which matches my dream of what the cookie should taste like, as opposed to the dry and mealy reality of the commercially available cookie! When Hungry Hubby’s boss wanted me to make a giant Oreo for son’s 18th, after making a giant choc chip cookie for her daughter’s 21st I jumped at the chance to get creative in the kitchen once again.

They were some lucky kids I hasten to add as not only did they get their favourite cookies made into giant versions, they each got a chocolate cake (this is my go to one) – hers was a Minstrels and Kit Kat anti-gravity cake and his was a Haribo extravaganza!

cookies and cakes

My homemade Giant Oreo Cookie is exactly what it says on the (cookie) tin. It’s a huge 10 inch diameter dark chocolate cookie sandwiched with a real vanilla buttercream (make your own vanilla extract, it’s so worth doing in simple bakes like this one). I found some brilliant silicone giant cookie moulds on Amazon and at the time of writing, they are only £4.97! A total bargain with the added bonus of being good quality silicone which is easy to unmold doesn’t impart an aftertaste and they have a really good design too.

You can use cake mix in them if you fancy an Oreo cake but I’ve kept true to the original and gone for a giant chewy, fudgy, chocolate cookie instead. I love Callebaut Extra Brute cocoa at the best of times but especially so in cases when I want a very darkly coloured chocolate cake. Together with the dark muscovado sugar which lends treacly chew to the finished bake, this truly is a black and white cookie worthy of devouring, with or without a huge glass of milk. I dusted a little cocoa powder on the cookie to help show the details for the photographs here so it looks lighter than it is in reality.

giant oreo cookie_-7

A perfect party piece, and great for cookie monsters who would rather have the chew of a good cookie than the soft, tender crumb of a chocolate birthday cake (…or as well as in the case of Hungry Hubby’s Boss’s son lol!). Don’t skimp on the chilling time before you unmold the cookies – I promise I’ve tried without and you’ll end up losing the patterned bits if the cookies aren’t completely chilled and solid. Give it 30 minutes before serving and you’ll be eating the biggest mouthful of darkly delicious fudgy chocolate cookie you’ve ever had.

Giant Oreo Cookie
What you have here is truly a huge homemade Oreo cookie rather than a cake, made to look like a cookie. Best served cut up into small chunks as it is so rich, it will definitely satisfied a big crowd at a party!
Servings: 20
: 281 kcal
Author: Just Jo
For the cookies
  • 200 g very soft butter
  • 250 g dark muscovado sugar
  • 2 large eggs
  • 2 tsp vanilla extractt
  • 1/2 tsp sea sal
  • 200 g plain flour
  • 50 g cocoa
  • 1 tsp baking powder
For the filling
  • 125 g soft butter
  • 300 g icing sugar
  • 1 tsp vanilla extract
Essential equipment
  • Silicone giant cookie moulds approx 10 inches in diameter
  1. Preheat the oven to 180˚C and place a baking sheet in the oven to preheat. Grease your cookie moulds (as always, I like my rapeseed/canola oil spray).
  2. Beat the sugar and butter together for the cookies until very light and fluffy, then beat in the eggs one at a time.
  3. Stir in the vanilla and salt.
  4. Sift the flour, cocoa and baking powder together then fold into the creamed butter mixture. When well mixed, divide into two and spread into the greased giant cookie moulds. I thin it out towards to edges to prevent it puffing up around the rim of the cookies, making sandwiching them much easier (and more aesthetically pleasing!).
  5. I find it's best to cook one at a time so store the second cookie in the fridge whilst the first bakes for 22-25 minutes.
  6. Cool on a rack until both cookies are cold then transfer to the fridge for 30 minutes minimum (an hour is best) to allow them to solidify so when you carefully peel away the silicone, it will leave the imprint of the ridges, any decoration and the embossed word "cookie" in tact.
  7. Make the buttercream by beating the butter with the (sifted) icing sugar until very pale, light and fluffy before mixing in the vanilla. If liked, use a piping bag with a large plain nozzle (1.5 - 2cm wide) to pipe the buttercream on the undersurface of one cookie then sandwiching the second on top. Or just use a palette knife to smooth it on.
Recipe Notes

I use Lurpak butter in *all* of my baking but especially when I want a white buttercream. Another trick it to add a teeny, tiny dot of purple food colouring gel into the buttercream and mix well, adding a single dot at a time until the yellow is neutralised and it appears very white. Try it - it really works!

Nutrition Facts
Giant Oreo Cookie
Amount Per Serving
Calories 281 Calories from Fat 126
% Daily Value*
Total Fat 14g 22%
Saturated Fat 9g 45%
Cholesterol 51mg 17%
Sodium 184mg 8%
Potassium 61mg 2%
Total Carbohydrates 35g 12%
Sugars 26g
Protein 2g 4%
Vitamin A 8.6%
Calcium 2.9%
Iron 3.6%
* Percent Daily Values are based on a 2000 calorie diet.

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  1. Laura 25/08/2016 at 12:39 - Reply

    I know what you mean – there is so much Oreo hype that you think they’re going to o be amazing but then you realise they aren’t. Strangely, the lidl brand version taste far nice and if you read the ingredients (that might be just me) they are better quality too. Still, your giant version is so much better it isn’t comparable. How about a peanut butter filled one next? Please say yes!

    • Just Jo 25/08/2016 at 15:06 - Reply

      Oh that would be so easy to do! In fact, I bet any of the store bought Oreo cookie versions could be turned into something very much more delicious when homemade. I quite fancy trying a homemade Cinnabon Oreo ohhhh myyyy yes I do! lol x :D

  2. Kate @ Veggie Desserts 25/08/2016 at 14:24 - Reply

    This looks amazing!! I would love a giant oreo :) It does look way better than a store-bought little one.

    • Just Jo 25/08/2016 at 15:11 - Reply

      It’s deffo one scenario when bigger is better alright Kate ;) lol

  3. Gloria @ Homemade & Yummy 25/08/2016 at 14:49 - Reply

    That looks like one delicious cake. Love the silicone mold as well…looks great!!

    • Just Jo 25/08/2016 at 15:12 - Reply

      It’s great isn’t it Gloria? And so cheap! Brilliant to have for when you need a celebration worthy bake but don’t have the time to do anything intricate and fiddly :D

  4. Elizabeth 25/08/2016 at 15:28 - Reply

    Oh my gosh this is heaven on a plate, it is!!! I need to make one of these, soon! (ps. I love Oreos!)

    • Just Jo 25/08/2016 at 15:41 - Reply

      Thanks Elizabeth! I’m sure you’d love this then :D

  5. Karen Burns-Booth 25/08/2016 at 15:43 - Reply

    This fabulous GIANT cookie will make lots of Oreo cookie lovers all over the world VERY happy! It is simply amazing and would be fabulous for a birthday party!

    • Just Jo 25/08/2016 at 15:55 - Reply

      Oh thank you Karen! It’s certainly party ready :D

  6. Jill 25/08/2016 at 16:28 - Reply

    I’m amazed by how perfectly the cake released from the molds. I think I may need to purchase some myself :) Love Oreos and love your cake version.

    • Just Jo 25/08/2016 at 16:37 - Reply

      The keys are to spray the moulds well with oil before using (a light but thorough coating) plus ensuring the cookie is completely chilled before even attempting it. And don’t rush it! Let the cookie fall out of the mould with you just teasing up the edges is the best way to describe how I do it :D

  7. Elizabeth @ 27/08/2016 at 00:52 - Reply

    What?! This is so fun! Now I just need a giant glass of milk to dunk this in. :)

    • Just Jo 28/08/2016 at 07:49 - Reply

      It might need to be the size of a mixing bowl for this cookie lol ;)

  8. Julie French 25/01/2017 at 21:00 - Reply

    I am planning to make this for my son’s birthday – how do you cut the cookie without making it crumle, so it remains in slices?

    • Just Jo 25/01/2017 at 21:03 - Reply

      It actually cuts remarkably well Julie, especially if you make it a day in advance so the filling and cookies can meld together just a little. I cut it into chunks rather than traditional slices like a cake as that would be far too big a portion, even for this confirmed Cookie Monster lol!

      • Just Jo 25/01/2017 at 21:06 - Reply

        And p.s. I use my super sharp chef’s knife and start slicing by inserting the point of the knife first from the centre of the cookie and slowly press down. It’s actually easier if it is chilled to firm up the filling a little then the cookies wont slip around x

        • Julie French 26/01/2017 at 13:44 - Reply

          Thanks for the advice I will give that a try.

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