{"id":1515,"date":"2026-02-02T15:05:40","date_gmt":"2026-02-02T15:05:40","guid":{"rendered":"https:\/\/recipes.ukbiddingdirectory.com\/?p=1515"},"modified":"2026-02-02T15:05:40","modified_gmt":"2026-02-02T15:05:40","slug":"smashed-onion-burgers-with-secret-sauce","status":"publish","type":"post","link":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/2026\/02\/02\/smashed-onion-burgers-with-secret-sauce\/","title":{"rendered":"Smashed Onion Burgers with Secret Sauce"},"content":{"rendered":"

Smashed Onion Burgers with Secret Sauce<\/strong><\/h2>\n

Ingredients<\/strong><\/h3>\n

For the Burgers<\/strong><\/h4>\n
    \n
  • 1 lb (450 g) ground beef (80\/20 for best flavor)<\/li>\n
  • 1 large onion, very thinly sliced<\/li>\n
  • Salt and black pepper, to taste<\/li>\n
  • 4 burger buns<\/li>\n
  • 4 slices American cheese or cheddar (optional)<\/li>\n
  • 1 tablespoon oil or butter (for cooking)<\/li>\n<\/ul>\n

    For the Secret Sauce<\/strong><\/h4>\n
      \n
    • 1\/2 cup mayonnaise<\/li>\n
    • 2 tablespoons ketchup<\/li>\n
    • 1 tablespoon yellow mustard<\/li>\n
    • 1 tablespoon pickle relish (or finely chopped pickles)<\/li>\n
    • 1\/2 teaspoon garlic powder<\/li>\n
    • 1\/2 teaspoon onion powder<\/li>\n
    • Salt and pepper, to taste<\/li>\n<\/ul>\n

      Instructions<\/strong><\/h3>\n

      1. Make the Secret Sauce<\/strong><\/h4>\n

      In a small bowl, mix mayonnaise, ketchup, mustard, pickle relish, garlic powder, onion powder, salt, and pepper.
      \nCover and refrigerate while preparing the burgers.<\/p>\n

      2. Prepare the Beef<\/strong><\/h4>\n

      Divide the ground beef into 4 equal balls<\/strong> (do not flatten yet).
      \nSeason lightly with salt and pepper.<\/p>\n

      3. Cook the Onions<\/strong><\/h4>\n

      Heat a large skillet or griddle over medium-high heat<\/strong> and add oil or butter.
      \nPlace a generous handful of sliced onions on the hot surface for each burger.<\/p>\n

      4. Smash the Burgers<\/strong><\/h4>\n

      Place one beef ball directly on top of the onions.
      \nUsing a spatula or burger press, smash the beef firmly<\/strong> into the onions.
      \nSeason the top with salt and pepper.<\/p>\n

      5. Cook<\/strong><\/h4>\n

      Let cook for 2\u20133 minutes<\/strong> until the bottom is crispy and caramelized.
      \nFlip the burger, add cheese if using, and cook another 1\u20132 minutes<\/strong> until done.<\/p>\n

      6. Toast the Buns<\/strong><\/h4>\n

      Lightly toast the burger buns in the same skillet until golden.<\/p>\n

      7. Assemble<\/strong><\/h4>\n

      Spread secret sauce on both sides of the buns.
      \nAdd the smashed onion burger, close with the top bun, and serve immediately.<\/p>\n

      Serving Tips<\/strong><\/h3>\n
        \n
      • Serve with fries, chips, or a simple salad<\/li>\n
      • Add lettuce or pickles if you like extra crunch<\/li>\n
      • For extra flavor, add a dash of hot sauce to the secret sauce<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

        Smashed Onion Burgers with Secret Sauce Ingredients For the Burgers 1 lb (450 g) ground beef (80\/20 for best flavor)…<\/p>\n","protected":false},"author":2,"featured_media":1516,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1515","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recipe"],"_links":{"self":[{"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/posts\/1515","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/comments?post=1515"}],"version-history":[{"count":1,"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/posts\/1515\/revisions"}],"predecessor-version":[{"id":1517,"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/posts\/1515\/revisions\/1517"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/media\/1516"}],"wp:attachment":[{"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/media?parent=1515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/categories?post=1515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/recipes.ukbiddingdirectory.com\/index.php\/wp-json\/wp\/v2\/tags?post=1515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}