Baked Sweet Potato with Kale & Caramelized Onions

Name: Baked Sweet Potato with Kale & Caramelized Onions
Total time: 1 h 10 min
Yield: 1 servings
Ingredients: 1 sweet potato large, scrubbed and pricked with a fork; 2 teaspoons olive oil; 2 tablespoons butter; 1/2 yellow onion sliced thin; 1 teaspoon minced garlic; 1 bunch kale trimmed and chopped; salt; pepper; 1/2 lemon