Garlicky Sweet Potato and Kale Mash

Ingredients

• 3 medium sweet potatoes, peeled and cut into 1-inch cubes
• 3 medium russet potatoes, peeled and cut into 1-inch cubes
• 1 tablespoon (15 mL) olive oil (see below for oil-free option)
• 1 leek, halved and thinly sliced
• 4 cups (268 g) chopped kale
• 4 cloves garlic, minced
• 1/4 teaspoon crushed red pepper
• 1 teaspoon sea salt
• 1/2 teaspoon ground black pepper
• 1/2 cup (120 mL) low-sodium vegetable broth, room temperature