Preparation / Directions:
Combine oats, flour, soda, and 1/2 teaspoon salt.
Beat the 1 cup margarine for 30 seconds; add brown sugar and beat till fluffy. Add eggs and 2 teaspoons of the vanilla; beat well.
Stir dry ingredients gradually into beaten mixture till well combined.
Heat together sweetened condensed milk, chocolate pieces, 2 tablespoons margarine, and 1/4 teaspoon salt ove rlow heat, stirring till smooth. Rove from heat. Stir in walnuts and the remaining 2 teaspoons vanilla.
Pat 2/3 of the oat mixture in the bottom of an ungreased 15x10x1-inch baking pan. Spread chocolate mixture over dough. Dot with remaining oat mixture. Bake in a 350-degree oven for 25 to 30 minutes. Cool on a wire~ rack. Cut into bars.