In a large bowl, combine brown sugar, soy sauce, minced garlic, grated ginger, lime juice, and olive oil. Whisk until smooth, then add boneless, skinless chicken and coat fully. Cover and refrigerate for at least 30 minutes.

Decide on your cooking method. Preheat your grill to medium-high, oven to 400°F (200°C), or prepare slow cooker for low cooking.

For grilling, cook chicken for 6-7 minutes per side until charred and cooked through. For baking, bake in greased dish for 25-30 minutes. For slow cooking, cover and cook on low for 6-8 hours.

Taste the sauce after cooking. Add more lime juice or soy sauce if it’s overly sweet.

Transfer the chicken to a plate, pour remaining sauce over, and garnish with chopped cilantro.