In a stand mixer with whisk attachment fitted beat heavy cream for 4 minutes on a 2. Move it up every 2 minutes until you reach the 10. Once the heavy cream looks like whipped topping stop the mixer.

Pour in sweetened condensed milk and fold until smooth.

Put crushed cereal or graham crackers at the bottom of the springform pan. Pour in half of whipped mixture. Top with some M&M's. Pour the rest over the top of the M&M's and top the cake with more M&M's for decor.

Freeze cake for 3 hours or until firm. Lightly heat the edge of the pan with warm water being careful not to wet the cake. Pop the springform lever open and remove. Slice with a warm knife and serve.