Grandma's Caramels

My grandma used to make these caramels and send them home with us. We always had a stash in the freezer. They're hardly diet food, but so delicious.

2 cups white sugar
1 cup brown sugar
1 cup white corn syrup
1 cup milk
1 cup butter
1 cup whipping cream
1/4 tsp vanilla

Cook first 6 ingredients (sugar through whipping cream) slowly over low to medium heat, stirring occasionally. Cook to 248 degrees. Remove from heat and add vanilla. Pour into buttered 9x13 pan. Cool and cut into squares. Wrap in waxed paper.

Recipe Source: Hazel Plack