This No-Bake Frozen Mud Pie is the Only Dessert My Family Demands All Summer!
1 1/2 cups Oreo cookie crumbs
4 cups chocolate chip or coffee ice cream, softened
1/4 cup chocolate syrup
1/4 cup butter, melted
1 1/2 tsp granulated sugar (optional)
Whole Oreo cookies, for garnish (optional)