Vegan Black Bean and Sweet Potato Salad

Name: Vegan Black Bean and Sweet Potato Salad
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Cuisine: American
Ingredients: 1 pound sweet potatoes, peeled and cut into 3/4-inch cubes; 3 tablespoons olive oil, divided; 0.5 teaspoon ground cumin, or more to taste; 0.25 teaspoon red pepper flakes; coarse salt and ground black pepper to taste; 2 tablespoons freshly squeezed lime juice; 1 (14.5 ounce) can black beans, rinsed and drained; 0.5 red onion, finely chopped; 0.5 cup chopped fresh cilantro