Tri-Level Brownies

Ingredients

• 1/2 c. sifted all-purpose flour
• 1/4 tsp. baking soda
• 1/4 tsp. salt
• 4 Tbsp. butter or margarine, melted
• 3/4 c. granulated sugar
• 1 egg
• 2/3 c. sifted all-purpose flour
• 1/4 tsp. baking powder
• 1/4 tsp. salt
• 1/4 c. milk
• 1 c. quick cooking rolled oats
• 1/2 c. brown sugar
• 6 Tbsp. butter or margarine, melted
• 1 sq. (1 oz.) unsweetened chocolate, melted or 1 envelope no-melt unsweetened chocolate
• 1/2 tsp. vanilla
• 1/2 c. chopped walnuts