Preheat your oven according to the instructions on the brownie mix package. Grease a 9x13-inch baking pan and pour in the brownie batter. Bake for the recommended time, then allow the brownies to cool completely. Cut into 1-inch cubes.

In a large mixing bowl, whisk together the instant pudding mix and cold milk for about 2 minutes. Add green gel food coloring and let it sit for about 5 minutes to thicken.

Crush the Mint Oreo cookies in a zip-top bag with a rolling pin. Set aside some for garnishing later.

In a large trifle bowl, layer half of the brownie cubes, half of the pudding, half of the whipped topping, and a layer of crushed Oreos.

Repeat the layering with the remaining ingredients, ensuring visually appealing layers.

Cover the trifle with plastic wrap and refrigerate for at least 4 hours or overnight.

Before serving, sprinkle with reserved crushed Oreos and add dollops of whipped topping and green sprinkles.