Preparation:
1. Preheat oven to 350 degrees. Lightly grease an 8 inch square pan or coat with cooking sprya.
2. To make the base, stir butter with egg yolk in a mixing bowl. Then add 1 cup flour, icing sugar and 1/4 tsp of salt. Stir with fork until well blended.
3. Press into the bottom of prepared baking pan and bake int he centre of preheated oven until lightly golden about 15 minutes.
4. To make the topping beat 3 eggs in a large bowl until slightly foamy. Stir brown sugar with 2 Tbsp flour and 1/4 tsp slat. Stir into eggs until blended. Beat in corn syrup and vinegar. Add nuts and chocolate chips.
5. Spread mixture evenly over hot base. Bake in the centre of 350F oven until top is set and edges are browned, 35-40 minutes. Plan pan on a rach to cool. Cut into squares. |