Preheat the oven: Begin by preheating your oven to 400°F (200°C).
Prepare the Brussels sprouts: Rinse the Brussels sprouts under cold water. Trim the ends and remove any outer leaves that are wilted or damaged.
Boil the sprouts: In a large pot, bring salted water to a boil. Add the Brussels sprouts and cook for 8-10 minutes or until they are fork-tender.
Drain and cool: Drain the Brussels sprouts and let them cool for a few minutes, enough to handle.
Smash the sprouts: On a lined baking sheet, place the Brussels sprouts spaced apart. Using the bottom of a glass or a potato masher, gently press down to smash each sprout to about 0.5-inch thickness.
Make the herb butter: In a small bowl, mix the softened butter with minced garlic, parsley, thyme, rosemary, lemon zest, salt, and pepper until well combined.
Spread the herb butter: Spoon the herb butter mixture generously over each smashed Brussels sprout. Drizzle with olive oil and sprinkle with red pepper flakes if using.
Roast the sprouts: Place the baking sheet in the preheated oven and roast for 20-25 minutes, or until the sprouts are golden brown and crispy on the edges.
Serve: Remove from the oven and let cool slightly. Serve warm as a delightful side dish or appetizer.
Notes
Optional red pepper flakes can be added for a spicy kick.
Keyword Brussels sprouts, herb butter, smashed, vegetable