Name: Cookie Monster Cookies
Prep time: 20 min
Cook time: 12 min
Total time: 32 min
Yield: 12 cookies
Ingredients: 120 g (1/2 cup) butter – unsalted, softened; 100 g (1/2 cup) granulated sugar; 50 g (1/4 cup) light brown sugar; 1 egg – room temp; 1 tsp vanilla extract; Blue gel food coloring; 230 g (1 3/4 cups) all-purpose flour; Pinch of salt; 1 tsp baking powder; 1/2 tsp baking soda; 40 g (1/4 cup) dark chocolate chips; 40 g (1/4 cup) white chocolate chips; 30 g (1/4 cup) crushed mini cookies; 3 Oreos, chopped; 12 whole Oreos for stuffing

Cookie Monster Cookies have a whole Oreo tucked inside each thick, bright-blue cookie. I fold dark and white chocolate chips, crushed mini cookies, and chopped Oreos into a buttery dough, then wrap it around another Oreo for a soft, cookie-filled center. The blue color gives these cookies their playful look, while the mix of crisp edges and chewy middle keeps every bite familiar. I like making them for birthday parties, bake sales, or an afternoon when a plain chocolate chip cookie needs a fun twist. The dough comes together with everyday baking ingredients, and a short chill helps the stuffed cookies hold their shape in the oven. Cookie Monster Cookies are generous in size, so give them room on the baking tray and let them cool briefly before serving. Break one open while it is still a little warm to see the Oreo center.

Ingredients:

120 g (1/2 cup) unsalted butter, softened
100 g (1/2 cup) granulated sugar
50 g (1/4 cup) light brown sugar
1 egg, at room temperature
1 tsp vanilla extract
Blue gel food coloring
230 g (1 3/4 cups) all-purpose flour
A pinch of salt
1 tsp baking powder
1/2 tsp baking soda
40 g (1/4 cup) dark chocolate chips
40 g (1/4 cup) white chocolate chips
30 g (1/4 cup) crushed mini cookies
3 Oreos, chopped
12 whole Oreos for stuffing

How to Make Cookie Monster Cookies

These thick blue cookies have a soft center packed with chocolate chips, cookie pieces, and a whole Oreo tucked inside. I make them when I want a playful bake that still has the familiar buttery chew of a classic cookie. The dough is easy to mix by hand or with a mixer, and chilling it before baking helps the stuffed cookies keep their shape.

Prepare the Dough

Get the butter and egg ready. Heat the oven to 180°C (350°F) and line baking trays with baking paper. The butter should be soft enough to press with a finger, but not oily or melted. If it is too warm, the dough can spread quickly in the oven. A room-temperature egg mixes more evenly into the butter and sugars than a cold one.
Cream the butter and sugars. Put the softened butter, granulated sugar, and light brown sugar in a mixing bowl. Beat them for about 2 minutes, scraping down the sides once, until the mixture looks creamy and slightly lighter. This step helps give the cookies a tender middle. Mix in the egg and vanilla until smooth. Add blue gel coloring a little at a time, stirring between additions until the dough reaches a strong blue shade. The color may look slightly lighter after the flour goes in.
Combine the dry ingredients. In a separate bowl, stir together the flour, pinch of salt, baking powder, and baking soda. Add this mixture to the butter mixture in two portions, mixing on low speed or by hand just until no dry flour remains. Stop as soon as the dough comes together. Overmixing at this stage can make the baked cookies firm instead of soft.
Fold in the cookie pieces. Add the dark chocolate chips, white chocolate chips, crushed mini cookies, and chopped Oreos. Fold them through with a sturdy spoon or spatula so the pieces are spread throughout the dough. Try not to crush the chopped Oreos further; larger chunks give the cookies good texture and leave visible cookie pieces in each bite.

Stuff and Chill the Cookies

Wrap the Oreos in dough. Divide the dough into 12 portions. Take one portion and flatten it into a thick disc in your palm. Place a whole Oreo in the middle, then bring the dough up and around the cookie, pinching the edges together to seal it. Check that no Oreo is showing through the sides, since exposed edges can make the filling dry out during baking. Repeat with the remaining dough and Oreos.
Chill the dough balls. Set the stuffed dough balls on a tray and refrigerate them for at least 30 minutes. Chilling firms the butter and makes the cookies less likely to spread too far, which helps keep the Oreo centered. If you have time, you can chill them for up to a few hours. Keep the tray covered if the dough will sit in the refrigerator for longer than 30 minutes.

Bake and Cool

Bake until the edges are set. Arrange the chilled dough balls on the lined trays, leaving about 7 cm (3 inches) between them. Bake for 12 to 15 minutes, depending on their size and your oven. The edges should look set, while the centers can still appear a little soft. Avoid waiting for the tops to turn deeply golden, because the blue color makes browning harder to judge and the cookies continue cooking on the hot tray.
Let them firm up. Leave the cookies on the tray for 10 minutes before moving them to a cooling rack. They are delicate straight from the oven, especially around the stuffed center. If a cookie spreads unevenly, gently nudge its edges inward with a spoon while it is still warm. Cool for at least another 10 minutes before serving so the chocolate and filling settle.

Serving and Storing

Serve the cookies slightly warm if you like soft chocolate chips and a tender center. For a neater cookie, let them cool completely before breaking one open; the Oreo layer will be easier to see and the crumb will hold together. Because each cookie is generous, you can also split one in half for a smaller serving.

Store cooled cookies in an airtight container at room temperature for up to 3 days. Keep them in a single layer if possible, or separate layers with baking paper so the cookie pieces do not press into the blue dough. To make the dough ahead, wrap the stuffed portions and refrigerate them for up to 24 hours, then bake from cold, adding a minute or two if needed. Check the centers before taking the tray out: they should look soft, but not wet.

Conclusion:

Cookie Monster Cookies pair buttery, blue dough with chocolate chips, crushed cookies, and a whole Oreo in the middle. Chilling the stuffed dough before baking helps the cookies stay thick, while a few minutes of cooling keeps the soft centers from falling apart when you pick one up. I like serving them slightly warm with cold milk, or arranging them on a birthday table with other colorful treats. For a small change, use extra white chocolate chips, swap the dark chips for milk chocolate, or leave out the crushed mini cookies if you want a less busy texture. Keep leftovers in an airtight container at room temperature for up to three days.

Can I make the dough ahead?

Yes. Cover the dough and refrigerate it for up to 24 hours. If you have already stuffed the portions, chill them on a tray and bake straight from the fridge, adding a minute or two if needed.

Can I use liquid food coloring?

Gel coloring gives a stronger blue without adding much liquid. If using liquid coloring, add it sparingly so the dough does not become too soft.

These cookies are a fun bake to share, and the Oreo center makes each one feel like a small surprise. Give the dough time to chill, and you can enjoy fresh Cookie Monster Cookies with a soft middle and crisp edges.