Brownie Bottom Oreo Mousse Pie

Ingredients

• 1 ¼ cups heavy whipping cream
• 1 cup heavy whipping cream
• ½ cup powdered sugar
• 4 ounces cream cheese, softened
• 4 ounces white chocolate
• 1 tablespoon cold water
• ¼ cup + 2 tablespoons powdered sugar
• 1 teaspoon gelatin
• 1 package fudgy chocolate brownie mix (19.9 oz)
• Ingredients listed on the box: oil, eggs, water
• 12 Oreos, crushed
• 12 Oreos (8 whole and 4 crushed)
• Hot fudge sauce for garnish (optional)