In a large mixing bowl, whisk together sauce ingredients until combined and uniform. Set aside.
Cook brown rice according to package instructions and set aside.
Add kale to a large mixing bowl with lemon juice and massage until tender.
Add oil to a large skillet and place over medium-high heat.
Add kale to the skillet and cook until tender and wilted, about 5-6 minutes. Transfer to a large mixing bowl with remaining bowl ingredients and toss to combine. Pour dressing over ingredients and toss to coat. Serve immediately.