- Level
- very easy
- Prep Time
- 15 mins
- Total Time
- 50 mins
- Serves
- 4
Ingredients
- 1⁄2 cup
- mayonnaise
- 125 ml
- 1 tbsp
- Dijon mustard
- 15 ml
- Black pepper
- 3 tbsp
- salted butter
- 45 ml
- 4 medium
- yellow onions, thinly sliced
- 2
- garlic cloves, thinly sliced
- 3
- thyme sprigs
- 1⁄2 tsp
- salt
- 2 ml
- 4
- Compliments Smashed Burgers
- 1 pkg
- Swiss Cheese Slices
- 150 g
- 4
- Sesame Seed Hamburger Buns
- 616 g
- 4 leaves
- green leaf lettuce
Directions
Step 1
Preheat a clean, oiled grill to medium-high.
Step 2
In a small bowl, combine mayonnaise with Dijon. Season generously with pepper. Cover with plastic wrap and refrigerate.
Step 3
Melt butter in a very large frying pan over medium heat. Add onions, garlic, thyme sprigs and salt. Season with pepper. Cook, stirring often, adding a splash of water if needed, until deeply browned, 25 to 30 min. Discard thyme sprigs. Set aside.
Step 4
Grill burger patties from frozen, with the lid closed, 5 to 7 min per side or until burgers reach an internal temperature of 160°F (71°C). Arrange cheese slices over burgers for the last 2 min of cooking to melt.
Step 5
Toast buns on the grill, if desired. Smear bottom of buns with Dijon-mayo, then top each with lettuce and 1 burger patty. Top with caramelized onions. Smear top buns with more Dijon-mayo and sandwich. Serve immediately.
Disclaimer: We seek to be accurate with respect to the ingredients, nutritional information, product images and descriptions listed on our website, however, this information may change from time to time. Please always refer to the product package for the most current and accurate ingredient and nutrition information or other product information.
