In a mixing bowl, combine olive oil, minced garlic, lemon juice, dried oregano, thyme, salt, and black pepper. Coat the sirloin steak thoroughly with the marinade and allow it to rest for 30 minutes at room temperature, or refrigerate for up to 4 hours for deeper flavor infusion.

While the steak marinates, create the tzatziki by mixing Greek yogurt, grated cucumber, minced garlic, and fresh dill in a small bowl. Stir until smooth, then season with salt and a dash of lemon juice.

In a separate bowl, whisk together olive oil, lemon juice, and a pinch of salt and pepper to taste.

Heat a large skillet over medium-high heat and add a drizzle of olive oil. Once the pan is hot, sear the marinated sirloin steak for 4-5 minutes on each side until it reaches your desired doneness.

In a bowl, layer your choice of cooked grains, followed by the sliced steak arranged beautifully on top. Add a generous serving of chopped cherry tomatoes, diced cucumber, sliced red onion, and Kalamata olives.

Finally, pour a generous drizzle of your chilled tzatziki over the assembled bowl, followed by a splash of the homemade vinaigrette for extra flavor.