Place the Oreo cookies inside a large ziplock bag and crush them using a rolling pin or your hands, leaving some larger chunks for texture. Set aside.

In a large pot, melt the butter over low heat. Once melted, add the mini marshmallows and stir continuously until fully melted and smooth.

Stir in the vanilla extract and a pinch of salt to enhance the flavor.

Remove the pot from heat and quickly fold in the Rice Krispies cereal, stirring until evenly coated in the marshmallow mixture.

Add the crushed Oreo cookies, reserving ¼ cup to sprinkle on top and gently mix until combined, ensuring the cookie chunks are evenly distributed.

Transfer the mixture to the prepared pan, pressing it down evenly using a greased spatula or clean, buttered hands.

Sprinkle the remaining ¼ cup crushed oreo’s over the krispie treats.

Allow the treats to cool at room temperature for about 30 minutes before cutting into squares or rectangles.