For dinner, I grilled a couple of grass fed beef patties, sauteed red onion and mushrooms, and put them all on a butter lettuce bun, with a couple of squeezes of spicy brown mustard. (paleocajunlady.com)
These Whole30 In N Out burgers: double double animal style are just as good as they sound and look: two thin patties brushed with mustard, loaded with pickle slices, deeply caramelized onions, a creamy sauce spiked with my Whole30 ketchup recipe, coconut aminos, and relish, all sandwiched between two perfect iceberg lettuce buns. (40aprons.com)
We top this keto burger recipe with my homemade Guacamole to add some fat and then wrap it in a lettuce bun. (elanaspantry.com)