Delaware Grilled Sweet Onion & Cheddar Burger Recipe

Introduction

There is something undeniably comforting about the classic combination of savory beef and sweet, caramelized onions, but the Delaware Grilled Sweet Onion & Cheddar Burger takes this pairing to an entirely new level. Inspired by the rich agricultural history of the region and the love for bold, savory flavors, this recipe focuses on the natural sweetness of onions grilled slowly to perfection. When prepared on an Arteflame grill, the flat cooktop allows you to achieve that restaurant-quality sear on the burgers while simultaneously caramelizing the onions in their own juices without losing them through the grates. This method ensures that every bite is packed with smoky, juicy flavor that you simply cannot replicate in a standard kitchen pan. Whether you are hosting a summer barbecue or just craving a gourmet dinner, this burger delivers a taste of the First State right in your backyard. It is robust, cheesy, and deeply satisfying, making it an instant favorite for anyone who appreciates the art of outdoor cooking.

Ingredients

• 1.5 lbs Ground Beef (80/20 blend for juiciness)
• 2 large Sweet Onions (Vidalia or Walla Walla), thinly sliced
• 4 slices Sharp White Cheddar Cheese
• 4 Brioche Burger Buns
• 4 tbsp Unsalted Butter (melted, for buns and onions)
• 1 tsp Sea Salt (plus more to taste)
• 1 tsp Coarse Black Pepper
• 1 tbsp Olive Oil (for the griddle)
• Optional: Crisp lettuce and heirloom tomato slices for garnish

Instructions

Step 1: Fire Up the Arteflame

1. Start by building a medium fire in the center of your Arteflame grill. Allow the wood to burn down slightly until you have a solid coal bed and the cooktop reaches a high searing temperature.
2. Scrape the flat cooktop clean to ensure a smooth cooking surface.
3. Apply a thin layer of olive oil across the surface where you plan to cook the onions and burgers to season the steel.

Step 2: Caramelize the Onions

1. Place the thinly sliced sweet onions on the cooler outer edge of the cooktop.
2. Drizzle with a little melted butter and season with a pinch of salt.
3. Cook slowly, turning occasionally with a spatula, for about 15-20 minutes until they are soft, golden brown, and incredibly sweet. Move them closer to the center if you need more heat, but be careful not to burn them.

Step 3: Grill the Patties

1. Divide the ground beef into four equal portions and gently form them into patties. Be careful not to pack the meat too tightly.
2. Season both sides of each patty generously with sea salt and coarse black pepper.
3. Place the patties on the hotter section of the flat cooktop (near the center).
4. Sear for about 3-4 minutes per side until a nice crust forms and the internal temperature reaches your desired doneness (135°F for medium-rare).

Step 4: Melt the Cheese and Toast Buns

1. During the last minute of grilling, place a slice of sharp white cheddar on each patty.
2. If needed, cover the patties with a basting dome for 30 seconds to help the cheese melt completely.
3. Brush the cut sides of the brioche buns with the remaining butter.
4. Place the buns face down on the flat cooktop for 30-60 seconds until they are golden and toasted.

Step 5: Assemble and Serve

1. Place the burger patty on the bottom bun.
2. Heap a generous amount of the caramelized sweet onions on top of the melted cheese.
3. Add any optional lettuce or tomato if desired, then cap with the top bun.
4. Serve immediately while hot and juicy.

Tips

Mastering the Delaware Grilled Sweet Onion & Cheddar Burger on the Arteflame requires understanding heat management. Because the Arteflame cooktop has varying heat zones, you should utilize the outer ring for the onions and the inner ring for the meat. The onions need time to break down their sugars without charring, so patience is key—do not rush them on high heat. Regarding the meat, use an 80/20 ground beef blend. The 20% fat content is crucial for keeping the burger moist during the high-heat sear. When forming your patties, press a small indentation in the center of each one with your thumb; this prevents the burger from puffing up into a ball during cooking, ensuring a flat, even surface for your toppings. Finally, let the meat rest for just a minute or two after pulling it off the grill to allow the juices to redistribute throughout the patty.

Variations

While the classic recipe is a crowd-pleaser, you can easily customize this burger to suit different flavor profiles. The versatility of the Arteflame cooktop allows you to experiment with various toppings simultaneously. If you prefer a bit of heat, try adding grilled jalapeños to the onion mix. For a savory umami kick, sauté mushrooms alongside the onions. Here are a few popular variations to try:

• The Delaware Destroyer: Add thick-cut applewood smoked bacon and a fried egg on top of the onions.
• Mushroom & Swiss: Swap the cheddar for Swiss cheese and add sautéed cremini mushrooms.
• BBQ Sweet Onion: Baste the burger with a smoky BBQ sauce during the last minute of grilling.
• The Spicy First State: Mix diced jalapeños into the beef patty before grilling and use Pepper Jack cheese.
• The Blue & Gold: Top with crumbled blue cheese instead of cheddar for a tangy contrast to the sweet onions.

Best pairings

A burger this rich and flavorful deserves sides and drinks that complement its profile without overpowering it. In Delaware, boardwalk fries are a legendary staple, typically served with vinegar and sea salt. The acidity of the vinegar cuts through the richness of the cheddar and beef, cleansing the palate between bites. If fries aren't your preference, a crisp, creamy coleslaw provides a nice temperature and texture contrast to the hot burger. For beverages, a local craft IPA is an excellent choice; the hoppy bitterness balances the sweetness of the caramelized onions perfectly. Alternatively, a chilled glass of iced tea or a classic vanilla milkshake brings a nostalgic diner feel to your backyard barbecue. These pairings ensure a cohesive dining experience that highlights the star of the show—the grilled sweet onion burger.

Conclusion

The Delaware Grilled Sweet Onion & Cheddar Burger is more than just a meal; it is a celebration of simple, high-quality ingredients coming together to create something extraordinary. Using the Arteflame grill enhances this experience, providing the perfect platform to sear the meat and caramelize the onions simultaneously, infusing everything with a subtle smoky aroma that standard gas grills often miss. This recipe is easy enough for a weeknight dinner yet impressive enough for weekend entertaining. By following the tips on heat management and ingredient selection, you are guaranteed a burger that is juicy, flavorful, and perfectly textured. We hope this recipe becomes a staple in your outdoor cooking repertoire. Fire up the grill, gather your friends and family, and enjoy the incredible flavors of this sweet and savory masterpiece.