Mix marinade ingredients and coat steak. Marinate for 30 minutes to 4 hours.
Mix tzatziki ingredients and chill in the fridge.
Whisk together vinaigrette ingredients.
Sear steak in a hot skillet 4–5 min per side. Let rest, then slice thinly.
Layer grains, steak, and toppings in a bowl. Add tzatziki and vinaigrette.
