Preheat the oven to 400 degrees F. Prep and chop all your vegetables.
Prepare the quinoa and red lentils according to package directions.*
Place the sweet potatoes, carrots, and red onion on one baking sheet. Place the cabbage rounds in a single layer on the other baking sheet. Drizzle the vegetables with the olive oil and sprinkle on the salt and pepper, dividing evenly between the two baking sheets. Give everything a good toss with your hands to ensure it's coated and seasoned well.
Place the baking sheets in the oven. Cook the cabbage for about 20 minutes, and the carrots and sweet potatoes for 25-30 minutes, stirring and flipping once halfway through.
While the quinoa, lentils, and veggies are cooking, prepare the peanut sauce. Add all the sauce ingredients to a small pot. Simmer over low heat for 5 minutes, stirring occasionally, until well combined and slightly thickened.
When the veggies are done, chop the cabbage and red onions.
Build your bowl! To each bowl, add some quinoa, lentils, sweet potato, carrots, cabbage, red onion, green onions, cilantro, and avocado. Top with a little peanut sauce. Enjoy!