Butter
1 c. sugar
1 c. (firmly packed) brown sugar
1/2 c. milk
1/2 tbsp. light corn syrup
1/4 c. peanut butter
1 tsp. vanilla extract

Butter sides of 2-quart glass mixing bowl. Combine sugars, milk and corn syrup in greased bowl. Microwave on high for 4 minutes or until mixture begins to boil, stirring once. Microwave on medium for 6 to 7 minutes longer or until candy reaches soft-ball stage. Add peanut butter; do not stir. Let cool about 1 hour. Add vanilla. Beat vigorously by hand for 5 minutes or until mixture starts to lose its gloss. Pour into buttered 8-inch square pan. Cool. Cut into squares.