Preheat oven to 400 F and arrange sweet potatoes and onions on a bare baking sheet

Heat a large skillet over medium heat with 1 cup brown rice and 2 cups water

Cook rice until tender about 15 minutes

In the meantime, drizzle both with a bit of oil

Bake for 10 minutes, then remove from oven flip sweet potatoes and add broccoli

Drizzle broccoli with a bit of oil and season with a pinch each salt and pepper

Bake for another 8-10 minutes, then add kale

Drizzle kale with a touch more oil and season with a pinch of salt and pepper.

Bake for another 4-5 minutes