Crush the cookies and set aside

Butter a 9X13 baking dish and set aside

Melt the butter in a large pot over low heat

Once the butter is melted, add the vanilla extract and marshmallows, stir continuously and cook until the marshmallows are melted

Once the marshmallows are melted, turn off the heat and pour in the Cocoa Rice Krispies® and stir until completely blended.

Using a buttered wooden spoon or spatula, spread the mixture into the buttered 9X13 baking dish and press to even out.

Top the mixture with your cookie crumbs, pressing down on them a bit so they stick to the marshmallow mixture.

Use your imagination and creativity to add the gummy worms.

Let cool completely and then slice and serve!