Trim and cut the brussels sprouts in half (making sure they stay attached at the bottom) and place in a large bowl with the olive oil, salt, and pepper. Stir to coat the brussels sprouts in the oil and seasonings.
Spread out on a baking sheet and roast for 20 minutes.
While brussels sprouts roast, add the gochujang, soy sauce, maple syrup, and juice from half a lime to a large bowl. Stir to combine.
Add the roasted brussels sprouts to the sauce and stir to coat. Return the coated brussels sprouts back to the sheet pan and roast for an additional 10-12 minutes.