To grate the onion, arrange a few paper towels on a cutting board, set a box grater on top, and run the onion along the grater to shred it into fine pieces. Use the paper towel to soak up any excess moisture—if the onion seems very wet, wring out the moisture over the sink. Line a small baking sheet or large plate with parchment paper or foil and set aside.

Add the ground chicken, grated onion, garlic, parmesan cheese, Caesar dressing, and anchovy paste to a large bowl. Season with 1 teaspoon kosher salt and ground black pepper as desired. Use your hands to mix until just combined—take care not to overmix as doing so leads to tough burgers. The mixture will be very wet—this is expected and intended!

Divide the mixture into 4 equal portions, forming each into a 1-inch thick burger patty. There’s no need to fuss over making them look perfect at this point—just aim to form them into the general shape and size. Set on the prepared baking sheet. Transfer to the freezer and chill for 20 minutes.

Meanwhile, as the chicken Caesar burger patties chill, prepare the grill for medium-high direct heat grilling, about 450-500 degrees F. Once preheated, clean the grates well with a wire brush.

Remove the burger patties from the freezer. At this point they should be quite a bit easier to handle; finish forming them into 1-inch thick patties, using your thumb to create an indent in the center of each patty. Just before placing the burgers on the grill, generously spritz a wad of paper towel with nonstick cooking spray. Use grill tongs to run the oiled paper towel over the grill grates, generously oiling the grates to prevent sticking. Transfer to the prepared grill grates and close the lid. Grill 6-7 minutes per side, or until an instant-read thermometer inserted in the center of the burgers registers 165 degrees F. If you’d like to add cheese, do so when there are 2 minutes left of grilling time.

Build your chicken Caesar burgers as desired. Here at the PWWB house, we like to smear toasty brioche buns with extra Caesar dressing, then pile the chicken caesar burgers high with leaf lettuce, shaved onion, and shaved parmesan cheese. Enjoy!