Fabulous Pecan Fudge

4 1/2 cups sugar
1/3 cup butter
1 can evaporated milk
7 ounces marshmallow cream
2 cups semisweet chocolate
2 cups milk chocolate chips
2 teaspoons vanilla
2 cups pecans, chopped

Butter a 13x9-inch pan. Combine sugar, butter, and milk in a large pan.

Bring to a boil over medium heat; boil 5 minutes, stirring constantly.

Remove from heat; add remaining ingredients except nuts and beat until smooth. Stir in nuts and then pour into pan.

Cool completely before cutting.