Creating Chimichurri Chicken Bowls with Garlic Sauce is simple if you follow these steps:

1. Make the Chimichurri Marinade: In a large bowl, combine the chopped parsley, oregano, minced garlic, olive oil, red wine vinegar, salt, and pepper. Mix well.
2. Marinate the Chicken: Add the chicken breasts to the marinade, ensuring they are well coated. Cover and let them marinate in the refrigerator for at least 30 minutes.
3. Prepare the Garlic Sauce: In a small bowl, whisk together the mayonnaise, Greek yogurt, minced garlic, lemon juice, salt, and pepper. Adjust seasoning to taste and set aside.
4. Cook the Chicken: Preheat a grill or skillet over medium-high heat. Remove the chicken from the marinade and cook for about 6-7 minutes per side, or until fully cooked and juices run clear.
5. Prepare the Base: While the chicken is cooking, prepare the rice or quinoa according to package instructions.
6. Assemble the Bowls: Once the chicken is cooked, slice it into strips. In bowls, place a generous scoop of rice or quinoa, followed by the sliced chicken.
7. Add Toppings: Top with halved cherry tomatoes, avocado slices, and a drizzle of garlic sauce.
8. Garnish: Finish with a sprinkle of fresh cilantro or parsley for added freshness.

These steps will guide you to create a delicious and vibrant meal that is sure to impress!