Easy Chocolate Chip Fudge
["2 c. (12 oz. pkg.) Hershey's semi-sweet chocolate chips or mini chips", "1 1/3 c. (14 oz.) sweetened condensed milk in can", "1/2 c. chopped nuts (optional)", "1 tsp. vanilla"]
["Combine sweetened condensed milk and chips in glass mixing bowl.", "Microwave on High (full power) about 1 to 1 1/2 minutes, until mixture is smooth when stirred.", "Add chopped nuts, if desired, and vanilla.", "Spread in greased 8-inch square pan.", "Cover; chill until firm.", "Cut into squares."]
["chocolate chips", "condensed milk", "nuts", "vanilla"]