In this mash-up of a hamburger and a BLT sandwich, creamy avocado is an unexpected addition. A homemade aioli made with fresh Meyer lemon juice adds bright flavor, though you could substitute purchased mayonnaise if you’d prefer. If you’re avoiding gluten, large lettuce leaves make a great gluten-free alternative to the bread.
For the aioli:
1 garlic clove
1 egg plus 1 egg yolk
1 cup (8 fl. oz./250 ml) canola or vegetable oil
Grated zest and juice of 1 Meyer lemon
6 slices thick-cut bacon, halved
1 1/2 lb. (750 g) ground beef
Kosher salt and freshly ground pepper
1 French baguette or 8 slices toasted sourdough bread
1 avocado, pitted and sliced
1 ripe tomato, cut into thin slices
4 large pieces of green-leaf lettuce
To make the aioli, combine the garlic and a big pinch of salt in a food processor. Pulse several times until the garlic is finely chopped. Add the egg and egg yolk and pulse to combine. With the machine running, slowly drip a few drops of oil, and then follow with a slow, steady stream of oil. Add the lemon juice and zest and blend until combined. Season with salt and set aside at room temperature until you are ready to serve, or store in the refrigerator in an airtight container for up to 1 week.
Prepare a medium-hot fire in a grill.
In a fry pan over medium-high heat, fry the bacon, turning occasionally, until crispy, about 6 minutes. Transfer to paper towels to drain. Set aside.
Form the ground beef into 4 rectangular patties. Season both sides well with salt and pepper. Coat the grill grate lightly with cooking spray. Arrange the burgers on the grate directly over the heat and grill, turning once, until medium-rare, about 4 minutes per side.
Slice the baguette into 4 1/2-inch (11.5-cm) lengths and split. Slather the cut sides of the baguette with aioli. Top the bottom half of the bread with lettuce, then the burgers, then layer with avocado, bacon and tomatoes, dividing them evenly. Close the burgers and serve immediately. Serves 4.
For this and more ideas for burgers you’ll want to serve every night of the week, check out our new Burger Night, by Kate McMillan.