Melt the butter in a small saucepan over medium heat; cook and whisk until butter starts to foam and turn golden brown. Place butter in a large mixing bowl.
In a medium mixing bowl, sift together flour, baking soda, baking powder and salt.
Add brown sugar, Biscoff, vanilla and corn syrup to bowl with butter; beat, using a mixer on medium speed, until well combined. Beat in egg until well combined. Reduce mixer speed to low and beat in flour mixture until just combined. Stir in chocolate chips, peanuts until just combined. Chill dough in refrigerator for 30-45 minutes or until cold.
Heat oven to 350 degrees F. Place rounded scoops of dough onto cookie sheets; press pretzels into dough. Bake 12 minutes or until golden brown. Cool 5 minutes before transferring to a wire rack.