Peanut Butter Fudge Brownie Bars

1 cup margarine
1 1/2 cups sugar
2 eggs
1 tsp vanilla
1 1/4 cups flour
2/3 cups cocoa
1/4 milk
1 1/4 cup nuts (I used walnuts)
1/2 cup margarine
1 2/3 cups (1 pkg) peanut butter chips
1 can sweetened condensed milk
1/4 cup chocolate chips

Preheat oven to 350. Grease 9x13 pan. Melt margarine. Beat margarine with sugar, eggs and vanilla. Add flour, cocoa and milk. Beat well. Stir in 1 cup nuts. Pour into pan. Bake 25-30 minutes. Cool completely. Melt 1/2 cup margarine with peanut butter chips over low heat. Add sweetened condensed milk and stir until smooth. Pour over brownies. Melt 1/4 cup chocolate chips. Drizzle over bars. Sprinkle with 1/4 cup nuts. Refrigerate until firm.