How to Make It
Place pretzels and peanuts in a ziplock plastic bag. Seal bag, leaving a 1-inch opening at one corner. Lay bag flat on a work surface, and lightly crush pretzels and peanuts with a skillet, meat mallet, or the flat side of a measuring cup. Set aside.
Combine cream cheese, mozzarella, dill, mustard, salt, and pepper in a bowl or the bowl of a heavy-duty electric stand mixer fitted with the paddle attachment. Stir or beat on low speed until combined. Shape mixture into a ball, and chill 15 minutes.
Place pretzel mixture in a shallow dish. Roll cheese ball in pretzel mixture, pressing gently to adhere. Serve with crackers.