Brownie Ice Cream Cake

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Grease and flour two 9-inch cake pans.

Step 2
Combine brownie mix, oil, water, and eggs in a mixing bowl; stir well with a spoon until thickened and smooth, about 1 minute. Spread batter into the prepared cake pans.

Step 3
Bake in the preheated oven until set and browned, about 30 minutes. A toothpick inserted into the center of a pan should come out with moist crumbs. Let cool for 10 minutes in pans before removing to finish cooling on racks.

Step 4
After brownies are cool, remove ice cream from the freezer and allow to soften for about 10 minutes.

Step 5
Meanwhile, pour sweetened condensed milk into a saucepan and mix in chocolate chips; heat over low heat, stirring constantly, just until chips have melted and sauce is smooth. Remove from heat and allow to cool to barely warm temperature.

Step 6
Place one of the layers of brownies into the bottom of a 9-inch springform pan. Evenly spread ice cream in a layer over brownies; pour and spread 1/2 of the chocolate sauce over ice cream. Top with the other brownie layer, and drizzle remaining sauce over the top.

Step 7
Freeze until ready to eat, at least 1 hour.

Step 8
Serve topped with whipped topping.