Roasted Sweet Potato Salad with Spinach and Grapes

Name: Roasted Sweet Potato Salad with Spinach and Grapes
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: American
Ingredients: 3 medium sweet potatoes (peeled and chopped into 1-inch cubes); ½ small red onion (thinly sliced); ½ cup dried cranberries; 2 cups red grapes (halved); 1 large ripe but firm avocado (diced); 5 ounces baby spinach (chopped); 2 tablespoons mayonnaise; 2 tablespoons fresh lime juice; 1 teaspoon sriracha (optional); Pinch cayenne pepper (optional); ¼ teaspoon sea salt (to taste); Goat chevre (crumbled)