With 14 grams of protein per serving, this is one vegetarian meal with serious staying power.
Cook the quinoa according to the package directions.
Meanwhile, heat the oil in a large Dutch oven over medium-high heat. Add the sweet potatoes, 1 teaspoon salt, and ½ teaspoon pepper and cook, covered, tossing occasionally, until the potatoes begin to brown and soften, 6 to 8 minutes.
Add the onion to the pot and cook, tossing occasionally, until the sweet potatoes and onion are tender, 4 to 6 minutes. Add as much kale to the pot as will fit and cook, tossing frequently and adding more kale when there is room, until tender, 3 to 4 minutes.
Reserve half the quinoa and vegetables for tomorrow’s dinner. Serve the remaining vegetables over the remaining quinoa, topped with the pesto and walnuts.
Reheat and serve:Microwave the quinoa and vegetables in a microwave-safe dish covered with a damp paper towel on high for 2 to 3 minutes, tossing halfway through.