Dressing: In a bowl, whisk together Milk, yogurt, chives, thyme, mustard, sugar, salt and pepper; gradually whisk in vinegar.

In a shallow dish, pour 1/4 cup (50 mL) dressing over chicken; turn to coat. Let stand for 10 min. Set remaining dressing aside.

Meanwhile, preheat barbecue grill to medium or preheat broiler.

Place chicken on greased grill and close lid or on a foil-lined baking sheet if broiling (discard any excess marinade). Grill or broil chicken for about 8 min per side or until no longer pink inside. Transfer to a cutting board; let stand for 3 min.

In a large bowl, toss lettuce with 1/2 cup (125 mL) dressing. Slice chicken into thin strips. Divide lettuce among plates; top with chicken, tomatoes, avocado and cheese. Drizzle with more dressing. (Extra dressing can be covered and refrigerated up to 3 days.)

To drain yogurt, spoon 1 cup (250 mL) plain yogurt into a sieve lined with a coffee filter; set over a bowl and cover. Refrigerate and let drain for 4 hrs or up to 1 day. Measure 1/2 cup (125 mL).

Healthy Eating Tip: Romaine and other varieties of darker coloured lettuce offer more nutrients than ice berg lettuce so opt for the darker versions more often. Other richly coloured salad ingredients like the avocado and tomatoes featured here add important antioxidants and nutrients for your family’s good health.