1. Make Hot Fudge Sauce and chill at least 2 hours. (This can be made several days ahead, if desired). Bake brownies according to package directions. Cool. Measure 2 cups coarsely cubed brownies and refrigerate until ready to make the ice cream. The remaining brownies can be enjoyed anytime.
2. Mélanger le lait, la crème et le sucre dans un bol et bien mélanger pour dissoudre le sucre. Ajouter le sirop de maïs, l'extrait de vanille et le sel; continuer à remuer jusqu'à ce que le tout soit bien mélangé.
3. Pour mixture into ice cream machine bowl. Process according to manufacturer directions for 25 to 30 minutes or until the consistency of thick soft-serve ice cream. Add cubed brownies the last 2 to 3 minutes of churning. Immediately pour into a large bowl and freeze 1 hour. The ice cream will become more solid in the freezer.
4. Layer ice cream and chilled Hot Fudge Sauce in a freezer container. Freeze at least 2 hours before serving.

**Or, prepare your favourite brownie recipe.