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Hamburger with caramelized onions and grilled pineapple

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Some of my friends are not too much into sweets or cookies, so lately, since I’ve been on a Holiday cookie baking craze, I’ve started receiving threats complaints from them to stop posting pictures of cookies and requests to finally post something more meaty. Well, what could be more meaty than a hamburger? Especially, a juicy hamburger with caramelized onions, grilled pineapple, topped with melted cheddar cheese, tomato slices and red onion:

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I’ve had a hamburger with a grilled pineapple for the first time in Hawaii, and ever since I began to appreciate the addition of something sweet to the grilled beef. Because the pineapple is somewhat acidic, even a little bit tart, but yet sweet – it combines perfectly with a hamburger meat, cutting through the fat and creating a balance of flavors!

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I like to serve these hamburgers open-faced – that way you can really see the grilled pineapple on top, and I don’t like too much bread with meat anyway. But, it’s up to you – use a whole bun or only half of it!

Hamburger with caramelized onions and grilled pineapple

Total Time: 60 minutes

Yield: 4 servings (4 hamburgers)

Hamburger with caramelized onions and grilled pineapple


    Caramelized onions:
  • 1 tablespoon olive oil
  • 3 onions, medium or large, sliced
  • pinch of salt
  • 1 tablespoon balsamic vinegar
  • Burger patties:
  • 1 pound ground beef (80% lean)
  • salt and pepper
  • 2 tablespoons vegetable oil
  • slices of cheddar cheese
  • Grilled pineapple:
  • 4-8 large pineapple slices or rings (I like to use a fresh whole pineapple)
  • 1 tablespoon olive oil
  • 2 tablespoons honey
  • Other fixings:
  • 4 hamburger buns, toasted and warmed
  • lettuce
  • sliced tomatoes
  • sliced red onions


    How to caramelize onions:
  1. First, we need to caramelize the onions, prior to grilling the burgers and the pineapple. Heat 1 tablespoon olive oil on high heat in a large skillet, when oil is heated, add sliced onions and cook on high heat for about 10 minutes, constantly stirring with spatula. The onions should start to brown, but without burning (a couple of onions may be burnt here and there, but overall they should not be charred). Reduce heat to medium and continue cooking onions for 10 more minutes, continuing to stir, as onions brown even more without burning. At this point add just a pinch of salt over onions. Continue cooking for 10 more minutes on medium or low heat, stirring occasionally to make sure onions don’t stick to the bottom of the pan or burn. Total you should have cooked onions for 30 minutes. Remove from heat and sprinkle onions with a small amount of balsamic vinegar to deglaze the pan. Using spatula, mix the onions, scraping the bottom of the pan and coating onions with a pinch of balsamic vinegar you just added.
  2. To make hamburgers:
  3. Make 4 equal hamburger patties out of ground beef. Season both sides of each patty with salt and pepper. Because the ground beef has been refrigerated before you formed the patties, allow the burgers rest at room temperature, for about 20 minutes, while the grill heats up.
  4. Heat a gas grill to high heat, about 450 degrees Fahrenheit.
  5. Brush both sides of each hamburger patty with vegetable oil (otherwise, they will stick to the grill). Grill hamburger patties for about 3 minutes on the first side. Flip them over, and cook the other side of each hamburger patty for 4 minutes for medium-rare burgers or 6 minutes for well-done burgers. In the last minute of cooking, arrange a slice or two of cheddar cheese on top of each hamburger patty to melt.
  6. To grill pineapple:
  7. In a microwave, melt honey just a little bit, add 1 tablespoon of olive oil and combine – in a medium bowl. Add pineapple slices (or rings) to the bowl and stir to coat the pineapple slices.
  8. At the same time you’re grilling hamburgers, place pineapple on the grill and cook for about 3 or 4 minutes on each side. Remove from the grill and keep warm.
  9. To assemble burgers:
  10. Arrange lettuce on the bottom of each bun. Place grilled hamburger patties (covered with melted cheddar cheese) on top of lettuce. Top each burger with caramelized onions, then tomato slices, and red onion slices. Finally, add grilled pineapple slice(s). Close with the top bun, if desired, or serve these as open-faced hamburgers.



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