These bars were very delicious and easy to make. I think they would also taste good made with a combination of chocolate chips, dried cranberries and coconut. White chocolate chips would be a good addition as well.
1 cup unsalted butter, at room temperature
1 1/4 cups brown sugar
3/4 cup white sugar
1 tsp vanilla
2 cups flour
2 tsp baking powder
1/2 tsp salt
2 cups quick-cooking or old fashioned oats
1 1/2 cups chocolate chips
Preheat oven to 375 degrees. In a mixing bowl, cream together the butter, sugars, eggs and vanilla. In a separate bowl, combine the flour, baking powder and salt. Gradually, add the flour mixture to the mixing bowl and beat just until combined. Fold in the oats and chocolate chips. Spread in a 10x15 baking pan, using a spatula or your hands to press into place. Don't press down too firmly. Bake for 20 minutes or until golden brown. Cool, but cut the bars while they are still somewhat warm, as a knife will go through them more easily.
You may also cut this recipe in half and bake in a square 9x9 pan. For thicker bars you may bake in a 9x13 pan for 25 minutes.
Source: Penzey's Spice Catalog