Down in Lake Havasu City, AZ there is a restaurant named "Barley Brother's Bewery" it has the most amazing Derby Pie I've ever had. Plus, the food is amazing. Every time we go there to eat we have to get Derby Pie for dessert.
I found this recipe online and made it - it wasn't AS good as the restaurant but it was good.
Total Time: 55 Minutes
1/2 cup butter, melted
1 cup sugar
1/2 cup flour
2 eggs, beaten
1 teaspoon vanilla
3/4 cup chocolate chips
3/4 cup pecans or 3/4 cup walnuts
9 inches unbaked pie shells
1. Combine all ingredients and mix with fork.
2. Bake in pie crust at 350 for 45 minutes, or until brown on top!