Cheddar Burgers with Balsamic Onions and Chipotle Ketchup

Ingredients for Cheddar Burgers with Balsamic Onions and Chipotle Ketchup

• 450g red onions, cut crosswise into 1/3- to 1/2-inch-thick rounds

• Olive oil

• 3/4 teaspoons coarse kosher salt

• 1/2 teaspoons coarsely ground black pepper

• 2 tablespoons balsamic vinegar

• 240ml ketchup

• 1 1/2 teaspoons chopped chipotle chillies from canned chipotles in adobo* plus 2 tablespoons adobo sauce from can

• 2 teaspoons (or more) balsamic vinegar

• 1.0kg beef mince (15% to 20% fat)

• Coarse kosher salt

• 6 thick slices sharp cheddar cheese

• 6 large English muffins or hamburger buns, split, cut sides grilled

• 6 tomato slices (optional)

• 2 cups fresh spinach leaves

How to make Cheddar Burgers with Balsamic Onions and Chipotle Ketchup

Prepare barbecue (medium-high heat): Arrange onion rounds on baking sheet. Brush with oil; sprinkle with 3/4 teaspoons coarse salt and pepper. Transfer onion rounds (still intact) to grill rack; close cover. Cook until grill marks appear, about 4 minutes per side. Reduce heat or move onions to cooler part of grill. Close cover; cook until onions are tender, about 10 minutes. Transfer to medium bowl. Toss with vinegar. DO AHEAD: Can be made 3 days ahead. Cover; chill.

Mix ketchup, chillies, adobo sauce, and 2 teaspoons vinegar in small bowl. Season with salt and more vinegar, if desired. do a h e a d Can be made 3 days ahead. Cover and chill.

Shape beef into six 1/2-inch thick patties. Sprinkle patties on both sides with coarse salt and pepper. Prepare barbecue (medium-high heat). Place burgers on grill. Close cover; cook burgers until bottoms start to darken and juices rise to surface, about 3 minutes. Turn burgers; cook to desired doneness, about 3 minutes longer for medium-rare. Top with onions and cheese. Close cover; cook until cheese melts. Place muffin bottoms on plates; spread with ketchup. Top with burgers, tomatoes, if desired, spinach, and muffin tops. Serve, passing remaining ketchup separately.

*Dried, smoked jalapeños in a spicy tomato sauce called adobo; available at some supermarkets and at specialty foods stores and Latin markets.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.