Preheat the oven to 400° Fahrenheit. Line two baking sheets with aluminum foil (or silpats). Set aside.
Combine sprouts and olive oil in a large bowl. Season with salt and pepper. Transfer onto baking sheet. Lay out strips of bacon onto the second baking sheet.
Set timer for 10 minutes. Flip the brussels sprouts to ensure they roast evenly. Set the timer for an additional 8 minutes.
Remove baking sheets from the oven. Pat dry bacon and chop it into bite-sized pieces. Combine roasted brussels sprouts and bacon bits in a serving bowl.
Making the Maple Butter
Use a small saucepan and melt the butter until golden brown. Whisk in maple syrup and reduce to a simmer. Simmer for 1-2 minutes. Whisk frequently.
Putting it Together
Drizzle maple butter over brussels sprouts and bacon and coat well. Serve immediately.