Holiday Skillet Sweet Potatoes

WHAT YOU'LL NEED

• 3 Tbsp. oil
• 1 large onion, coarsely chopped
• 1 medium red bell pepper, chopped
• 2 serrano chile peppers or more to taste, seeded if desired, and chopped
• 4 large sweet potatoes, (about 2 1/2 lbs.), peeled and cut into 3/4-inch chunks
• 1 large clove garlic, finely chopped
• 1 tsp. chili powder
• 1/2 cup water
• 1 Tbsp. Knorr® Chicken flavor Bouillon
• 1/4 tsp. freshly ground black pepper