Easy Maple Squares

3 eggs, beaten
2/3 c. cooking oil
1 c. dark maple syrup
1 tsp. vanilla
1 tsp. baking powder
1/2 tsp. salt
3/4 c. chocolate chips
1/2 c. chopped walnuts
2 c. flour

Mix in order given. Pour into 13 x 9" pan. Bake at 350 degrees for 30 minutes. Do not over bake.