Grilled Romaine and Roasted Walnuts

Author: Beachbody
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Prep Time 15 mins
Cook Time 6 mins
Total Time 21 mins
Servings 6 Servings
Calories 142 kcal
Ingredients
2 Tbsp. + 1 tsp. olive oil divided use
2 Tbsp. fresh lemon juice
½ tsp. Dijon mustard
Sea salt and ground black pepper (to taste; optional)
3 romaine lettuce heads stems attached (to hold leaves together), quartered
Nonstick cooking spray
¼ cup coarsely chopped raw walnuts
2 tsp. shaved Parmesan cheese