Soda Cracker Peanut Butter Fudge 2/3 cup milk 2 cups granulated sugar 27 crushed soda crackers (squares) 6 tablespoons peanut butter 1 teaspoon vanilla extract Bring milk and sugar to a boil, and cook for 4 minutes. Remove from heat and add remaining ingredients. Mix until thick and pour into a 9-inch square pan. Cool and cut into squares.