Step 1

In a large bowl, combine the bread, milk, salt, pepper, cumin, coriander, chili powder, smoked paprika, garlic, and Worcestershire sauce. Using a fork, mash into a paste.

Step 2

Add the ground beef, jalapeno, scallions, and cheese. Using your hands, mix until well combined. Shape the beef mixture into 8 patties slightly wider than the diameter of the buns. Form a slight depression in the center of each patty to prevent the burgers from puffing up on the grill. Refrigerate until ready to cook.

Step 3

Preheat the grill to medium-high heat and oil the grates. Brush the cut sides of the buns lightly with oil and set aside.

Step 4

Grill the burgers, covered, until nicely browned on the first side, about 3 minutes. Flip burgers and add cheese (if desired); continue cooking for about 2 minutes more for medium rare. Remove the patties from the grill and let rest on a plate. Add the buns to the grill, oiled side down, and grill for about 1 minute, or until lightly toasted with grill marks. Remove from the grill.Mound the arugula (if using) on the bottom halves of the buns. Top each bottom half with a patty, followed by a generous amount of the Roasted Tomato Peach Jam (or ketchup or salsa) and the upper half of the bun. Serve hot.

Step 5

Make Ahead: The burger patties can be formed, covered, and refrigerated 2 days ahead of time.

Step 6

Freezer-Friendly Instructions: The uncooked burgers can be frozen for up to three months. (Freeze the burgers on a baking sheet or plate so their shape sets, then transfer them to a sealable plastic bag for easy storage.). Defrost the burgers overnight in the refrigerator prior to serving and then cook as directed.

Step 7

Note: When handling jalapeño peppers, avoid touching your eyes and wash your hands well afterward.