Add oil/butter and heat until melted or shimmery, just a few seconds.
Toss broccolini in pan on medium high heat until it starts to soften and brown- about 5 minutes.
Salt and pepper liberally, add lemon slices- continue sauteeing while occasionally tossing to prevent from burning another 5 minutes.
Carefully add vermouth (there will be a large WOOSH of steam when adding liquid to the pan- be safe!) and heat, occasionally tossing vegetables to ensure they dont burn.
When vermouth has cooked off, remove from stove and plate.
Serve hot and enjoy.
Notes
*sub stock or ginger ale if you don't cook with wine