Preheat the oven to 400 degrees F. Toss the brussels sprouts with oil, salt and pepper. Spread in an even, single layer on a large baking sheet. Bake for 20 minutes, flip and bake another 15 minutes.
Meanwhile, whisk together all the sauce ingredients. Remove the brussels sprouts from the oven and drizzle them with the sauce. Stir to coat. Return to the oven for another 5 to 10 minutes, until browned and crispy.