Trim the ends and remove any damaged outer leaves
Cut larger Brussels sprouts in half
Rinse and dry thoroughly
Heat a skillet over medium-high heat
Add oil to coat the bottom of the skillet
Place Brussels sprouts cut-side down in a single layer
Season with salt and pepper
Cook without moving until browned on one side
Toss or flip and continue cooking until tender and browned
Add butter, garlic, or other seasonings if desired
Serve immediately