Preheat oven to 350 degrees Fahrenheit.

In a large mixer, cream together the butter, canola oil, yogurt, vanilla extract, brown sugar, and granulated sugar until smooth and creamy.

In a separate bowl, combine the rolled oats, whole wheat pastry flour, and salt.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Fold in the dark chocolate chips and butterscotch chips.

Drop rounded tablespoons of dough onto a parchment paper-lined baking sheet.

Bake for 13 minutes, or until the edges are golden brown.

Let cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.