Chocolate Chip Cookie Oreo Brownie Ice Cream Cake (Slutty Brownie Ice Cream Cake)

Ingredients:1 cup all purpose flour½ teaspoon baking powder1 cup butter, melted10 crunchy chocolate chip cookies (store bought is fine), crushed, plus additional for garnish½ cup chocolate sauce⅔ cup cocoa powder3 eggs2½ cups heavy whipping cream (unwhipped)powdered icing sugar, to taste20 Oreo cookies, crushed, divided, plus additional for garnish½ teaspoon salt2 cups sugar1 14oz can sweetened…