Step 1: Prepare Baking Tin

Line a 20cm (8-inch) square cake pan with non-stick baking paper, ensuring there's an overhang on two sides. This overhang will serve as handles to easily remove the fudge later. Set the prepared tin aside.

Step 2: Crush Cookies

Place 12 chocolate sandwich cookies (like Oreos) into a zip-lock bag. Press out any excess air and seal the bag. Use a rolling pin or a similar heavy object to roughly crush the cookies, aiming for a mixture of fine crumbs and larger chunks. Set the crushed cookies aside.

Step 3: Combine Chocolate and Condensed Milk

In a microwave-safe dish, combine 500g of white chocolate (buttons or roughly chopped blocks) and a 400g can of sweetened condensed milk. Stir briefly to coat the chocolate with the condensed milk.

Step 4: Microwave and Stir

Microwave the chocolate and condensed milk mixture for approximately 2 to 3 minutes. Stop the microwave every 15 to 20 seconds to stir the mixture thoroughly with a metal spoon. Continue until the chocolate is completely melted and the mixture is smooth and well combined.

Step 5: Fold in Crushed Cookies

Add the crushed chocolate sandwich cookies to the melted chocolate and condensed milk mixture. Carefully stir the cookies through until they are evenly distributed throughout the fudge mixture.

Step 6: Transfer to Baking Tin

Pour the cookies and cream fudge mixture into the prepared 20cm (8-inch) square baking pan.

Step 7: Smooth the Surface

Using a spatula or the back of a spoon, gently spread and smooth out the surface of the fudge in the tin to ensure it's even.

Step 8: Chill to Set

Place the baking tin with the fudge into the refrigerator. Chill for approximately 2 hours, or until the fudge has completely set and is firm to the touch.

Step 9: Remove and Slice

Once the fudge is set, use the baking paper overhangs to gently lift the entire block of fudge out of the tin. Carefully peel back the non-stick baking paper. Place the fudge on a cutting board and slice it into desired pieces, such as 25 squares.

Step 10: Serve and Enjoy

Arrange the sliced cookies and cream fudge on a plate and serve. Enjoy this simple, delicious, creamy, and rich treat!

• Line your baking tin with non-stick baking paper, leaving an overhang on two sides to easily lift the fudge out once set.

• When microwaving the chocolate and condensed milk, stop every 15-20 seconds to stir to prevent the chocolate from burning and ensure a smooth melt.

• You can use any brand of chocolate sandwich cookies you prefer.