4 strips thick-cut bacon, sliced
2 tablespoons butter
1 pound Brussels sprouts, halved
1/2 large onion, chopped
1. Cook bacon in a large skillet over medium-high heat until crispy. Remove and place on a paper towel-lined plate.
2. In same pan with bacon fat, melt butter over high heat. Add onions and Brussels sprouts and cook, stirring occasionally, until Brussels sprouts are golden brown, 8 to 10 minutes.
3. Season with salt and pepper, and toss bacon back into pan. Serve immediately.