Preheat oven to 400°F and adjust rack to the lower third of your oven. Spray 2 meatloaf pans with cooking spray on bottoms and sides and place atop a foil-lined rimmed baking sheet.
Scrape the mixture into a very large mixing bowl and allow to mostly cool. To the cooled trilogy, add the panko, eggs, Dijon, ketchup, Tabasco, 1 1/2 tablespoons of salt and 1 teaspoon of pepper.
The tops of the loaves will be lightly browned, and an instant-read thermometer inserted in the center of the loaves will register 150°F when done. Rest the loaves tented under foil for 15 minutes.