Heat 1 tsp oil in skillet over medium; thinly slice ½ of onion, sauté 8-10 min until browned, season with salt + add 2 tbsp water; cover + cook 3-5 minutes until softened; set aside

Heat lightly oiled skillet over med-high, season burgers with salt/pep + half the seasoning blend, then cook 3 min per side until crispy

Meanwhile, mix half the seasoning blend with 2 tbsp water, 2 tsp oil + salt/pep; whisk to combine; thinly slice 3 cucumbers + toss with dressing

Toast 2 buns until warm + golden; top buns with burgers + caramelized onions, then close the lid; serve with cucumber salad on the side