Peanut Butter Burger

Name: Peanut Butter Burger
Ingredients: 2 pounds 80/20 ground beef; Salt and pepper; 6 slices pepper jack cheese; 6 slices cooked bacon; Butter, for buttering buns; 6 brioche hamburger buns; 2 cups creamy peanut butter(see Cook's Note); 1/2 cup sriracha hot sauce; Chipotle Mayonnaise, recipe follows; 2 tomatoes, sliced; 1 red onion, sliced; 6 romaine leaves, halved; One 7-ounce can chipotle peppers in adobo; 2 1/2 cups mayonnaise; 3 tablespoons lemon juice; 1 tablespoon chipotle powder; 1 tablespoon salt; 1 tablespoon ground black pepper; 1/2 tablespoon minced garlic