Jul 14 2026
Restaurants›Cafe Kacao›Onion Burger Recipe

Onion Burger Recipe

Inspired by Cafe Kacao
Time30m
Serves2

A seasoned beef patty smashed with thinly sliced onions, flipped and served on a white bun.

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Ingredients

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Burger Patty

Toppings

Method

Prep the Ingredients

  1. 1

    Prepare the Onions

    Thinly slice the large yellow onion and set aside.

Cook the Burger

  1. 2

    Season the Beef

    In a mixing bowl, combine the ground beef with salt, black pepper, garlic powder, and onion powder. Mix gently but thoroughly.

  2. 3

    Form the Patty

    Shape the seasoned beef into two equal patties, about 1/2 inch thick.

  3. 4

    Cook the Onions

    Heat a skillet over medium heat. Add the thinly sliced onions and cook until they are caramelized, about 8-10 minutes, stirring occasionally.

  4. 5

    Cook the Burger Patty

    In the same skillet, increase the heat to medium-high. Place the burger patties in the skillet and smash them down with a spatula for a nice sear. Cook for about 3-4 minutes on one side.

  5. 6

    Flip the Patty

    Carefully flip the patties and place a slice of American cheese on each patty. Cook for an additional 3-4 minutes for medium doneness.

Assemble the Burger

  1. 7

    Toast the Buns

    While the burgers finish cooking, toast the white hamburger buns in the skillet for about 1 minute until golden brown.

  2. 8

    Build the Burger

    On the bottom half of each bun, place the cooked burger patty with cheese, followed by a generous portion of caramelized onions. Add ketchup and mustard to taste, then top with the other half of the bun.

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