Preheat the oven to 350 degrees F. Line an 8-inch square baking pan with aluminum foil and grease with nonstick cooking spray.

In a large bowl, combine the malted milk powder, brown sugar, flour, salt and baking powder.

In a medium bowl, whisk together the eggs, vanilla extract and oil. Add the wet ingredients to the dry ingredients mixing until just combined. Fold in the walnuts and chocolate chips, reserving 2 tablespoons chips. Spread the batter into the pan. Bake for 20 minutes before topping with caramels and remaining chocolate chips. Bake for an additional 10 minutes until golden brown.

Cool the blondies for 1 hour before cutting into squares.

Store in an airtight container.