Racetrack Pie

6 tablespoons margarine
2 eggs, beaten
1 cup granulated sugar
1/2 cup all-purpose flour
1 teaspoon vanilla extract
1 (6 ounce) package chocolate chips
1/2 cup chopped nuts
1 (9-inch) unbaked pie shell

Melt margarine, then cool. Mix eggs, sugar, flour and vanilla extract. Mix in cooled margarine. Fold in chips and nuts. Pour into pie shell and bake at 350 degrees F for 30 minutes. Cool before serving. May refrigerate to cool.