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finished recipe on a white plate with a gold spoon on a counter

Roasted Frozen Brussels Sprouts

Transform frozen brussels into a crispy, delicious side dish with maximum flavor from balsamic vinegar.
Course Side Dish
Cuisine American
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings 2 people
Calories 183kcal



  • Preheat the oven to 400 degrees F. Line a baking sheet with foil. Spread the frozen brussels sprouts (keep them whole, no need to thaw) in a single layer on the sheet. Toss with 1 tablespoon of the olive oil and season with salt and pepper to taste. Leave room between the sprouts to allow excess moisture to steam off. Roast for 20 minutes.
  • Remove the sprouts from the oven and carefully transfer them to a cutting board. Slice in half lengthwise and transfer them back to the baking sheet. Toss in 1 tablespoon of olive oil and 2 tablespoon of the balsamic vinegar. Arrange the sprouts cut side down. Roast for 10 to 15 more minutes until crispy.
  • Before serving, toss the sprouts in the rest of the balsamic vinegar (or if you have it, balsamic reduction or glaze). Enjoy warm.


  • For more flavor, add some shredded parmesan cheese before serving. You can also broil the sprouts with the cheese for a few minutes to melt it.
  • These are best enjoyed right away, as they will lose crispiness over time.
  • Double the recipe if you have a 20-ounce bag of frozen brussels sprouts, but be sure to leave enough room between the sprouts on the baking sheet. Use 2 sheets if needed.


Serving: 1serving | Calories: 183kcal | Carbohydrates: 12g | Protein: 3g | Fat: 14g | Saturated Fat: 2g | Sodium: 28mg | Potassium: 369mg | Fiber: 3g | Sugar: 6g | Vitamin A: 664IU | Vitamin C: 75mg | Calcium: 43mg | Iron: 1mg