Maple Toffee Bars

Ingredients

• 1 cup brown sugar 
• 0.5 cup butter softened
• 12 ounce chocolate chips 
• 1  eggs 
• 2 cups flour all-purpose
• 0.5 teaspoon maple extract 
• 0.5 teaspoon salt 
• 1 teaspoon vanilla extract 
• 0.5 cup vegetable shortening 

Equipment

• oven
• double boiler
• baking pan
• spatula

Directions

1. Preheat oven to 350 degrees F (175 degrees C).
2. Beat butter and vegetable shortening with brown sugar, egg, vanilla extract, and maple extract until smooth; stir in flour and salt. Lightly press the dough into a 10x15-inch baking dish.
3. Bake until the crust is set and lightly browned, about 15 minutes.
4. Melt chocolate chips in the top of a double boiler over simmering water, stirring frequently and scraping down the sides with a rubber spatula to avoid scorching.
5. Remove crust from oven and spread melted chocolate in a layer on top.
6. Sprinkle with walnuts.
7. Cut bars while still warm; let chocolate set, about 1 hour, before serving.