Hot Fudge Sauce

Ingredients:
- 1 1/2 cups granulated sugar
- 1/2 cup brown sugar, packed
- 3/4 cup cocoa
- 1/4 cup all-purpose flour
- 1/2 teaspoon salt
- 1 (14 ounce) can evaporated milk
- 1 cup water
- 2 tablespoons butter
- 2 teaspoons vanilla

Directions:
- Combine sugar, cocoa, flour, and salt in saucepan. Add milk, water, and butter. Cook over medium heat, stirring constantly, until boiling. Cook 5 minutes longer. Remove hot fudge sauce from heat, cool, then stir in vanilla.