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Grilled hamburger with watermelon, feta cheese, and red onions, sliced watermelon in background.

Beef Burger with Watermelon

Course: barbecue, BBQ, Dinner
Cuisine: American
Keyword: beef burger, watermelon burger, watermelon burger with mint
Prep Time: 30 minutes
Cook Time: 15 minutes
Chill Time: 2 hours
Total Time: 2 hours 45 minutes
Servings: 8 servings
Calories: 674kcal
Author: Laureen King
Thanks to the dynamic flavor of the savory beef patty, the soft richness of brioche bread, and the refreshing sweetness of watermelon, this burger with a twist is truly unforgettable.
Print Recipe

Ingredients

Marinated Red Onions

  • ½ cup Balsamic Vinegar
  • ¼ teaspoon Salt
  • 1 teaspoon Granulated Sugar
  • ¼ teaspoon Chili Flakes optional
  • ½ tablespoon Extra Virgin Olive Oil
  • ½ medium Red Onion thinly sliced

Mint Yogurt Sauce

  • 1 ½ cups Plain 10% Greek Yogurt
  • 1 clove Garlic minced
  • 2 teaspoons Lemon Juice
  • cup Fresh Mint Leaves finely chopped

Beef Patties

  • 2 pounds Lean Ground Beef
  • ¼ cup Red Onion minced
  • 1 clove Garlic minced
  • 10 leaves Mint Leaves finely chopped
  • ½ teaspoon Fresh Ground Pepper
  • ½ teaspoon Kosher Salt

Watermelon Patties

  • small Watermelon seeds removed
  • Grapeseed Oil for coating the watermelon

Additional Burger Ingredients

  • 8 slices Creamy Feta Cheese
  • 8 buns Brioche Buns

Instructions

Marinated Red Onions

  • To make marinated red onions, combine balsamic vinegar, salt, sugar, and olive oil in a jar or medium bowl. Mix until well combined. Add the onions and refrigerate for at least 2 hours.

Mint Yogurt Sauce

  • To make the mint yogurt, blend Greek yogurt, garlic, lemon juice, salt, and mint in a food processor. Refrigerate for at least 2 hours.

Burger Patties

  • For burger patties, mix ground meat, onion, garlic, mint, salt, and pepper in a large bowl.
  • Shape the mixture into 8 medium-sized patties.
  • Refrigerate for at least 1 hour.

Watermelon Patties

  • To make watermelon patties, first remove the seeds from the watermelon while keeping the fruit intact.
  • Slice the watermelon into thin pieces, about the thickness of a tomato slice used in a burger or slightly thicker. Create 8 patties.
  • Lightly coat the each patty with oil. Use just enough oil to prevent sticking and promote even cooking while grilling the fruit.

Grilling and Serving

  • Once you are ready to cook the burgers, slice the feta into thick pieces. Keep the slices about the same thickness as, or slightly thinner than the watermelon. Set Aside.
  • To cook the meat patties, grill them on a BBQ or skillet over medium-high heat (400°F) until they reach the desired level of doneness, typically about 5 minutes per side. I like my burger to reach an internal temperature of 150 degrees Fahrenheit.
  • When the burgers are done, add the watermelon to the grill and cook for approximately 2 minutes on each side so that the outside is caramelized and slightly golden brown. Remove From heat.
  • To assemble the burger, place the feta cheese, grilled watermelon marinated red onions, and mint yogurt on top of the cooked burger patty (in that order!).
  • Serve the Watermelon Burger immediately after assembling to enjoy the textures and flavors at their best.

Nutrition

Calories: 674kcal | Carbohydrates: 53g | Protein: 43g | Fat: 32g | Saturated Fat: 17g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 0.4g | Cholesterol: 241mg | Sodium: 1020mg | Potassium: 621mg | Fiber: 1g | Sugar: 10g | Vitamin A: 1476IU | Vitamin C: 10mg | Calcium: 260mg | Iron: 4mg