Caramel and mayonnaise brownies - Le Coup de Grâce

Ingredients

• 1/3 cup flour
• 1/3 cup cocoa powder
• 1 1/2 teaspoon baking powder
• 2 pinches salt
• 3 large eggs
• 1 cup brown sugar
• 1 teaspoon vanilla extract
• 1/2 cup mayonnaise
• 1/2 cup coarsely chopped pecans
• 1/2 cup butterscotch chips