In a large bowl, combine the prawns or shrimp with 1 Tablespoon olive oil, ½ teaspoon kosher salt, and ¼ teaspoon ground black pepper. Set aside.
Make the dressing
In a separate medium bowl, whisk together the lime juice, olive oil, minced garlic, chopped mint (save some for garnish), and red pepper flakes.
Assemble the salads
Evenly divide the mixed greens between four salad plates.
Top with sliced mango, sliced avocado, and marinated prawns, divided evenly between the plates.
Dress with the chili lime dressing. Garnish with any extra chopped mint leaves. Add more salt and pepper, to taste.
Notes
Makes approximately 4 salad servings, or 2 main course servings. Make Ahead: This salad is best enjoyed right after it is made. But you can prep the ingredients and store them in separate airtight containers for up to one day, then combine just before serving. You can toss the avocado slices in a bit of lemon or lime juice to help prevent browning.Storage: store leftovers in an airtight container in the refrigerator for up to one day.