I have an oven recipe: Cut the brussel sprouts in half. Toss in olive oil, minced garlic, and rosemary. You can add salt too, but i like to top with finishing salt and black pepper at the end to feel fancy. Arrange on a baking sheet with the cut side down. Bake at 375-400F (my SO and I differ on our preferred temp setting, but there's no difference in the deliciousness, go higher if you like to get a bit of char going on) until tender (i think around 20 minutes? i usually don't set a timer, i just poke 'em with a fork every so often until it feels right lol).