Frozen Roasted Brussel Sprouts
Updated Apr 30, 2026
These Roasted Frozen Brussels Sprouts are a delicious side dish that is both easy and convenient. A great way to cook frozen veggies!
Roasted Frozen Brussels Sprouts
Oven roasted frozen brussels sprouts are an easy and tasty dinner side dish. If you love brussels sprouts, you will love this recipe!
Roasting sprouts is the key to getting the right texture which is everything with brussels sprouts.
We love the convenience of frozen vegetables to cut down on prep time.
Although brussels sprouts bake best cut in half, we let the oven do the thawing for us.
Once they have baked a little bit, we can easily cut them in half and finish cooking.
While I love fresh brussels sprouts recipes (like these roasted brussels sprouts with parmesan and brussels sprout chips), it definitely takes some time to prep fresh brussels. This recipe is a big time saver!
Can you Roast Frozen Brussel Sprouts?
Yes, you can roast brussel sprouts from frozen. It’s important to get the right texture, which we do by roasting them at a high heat and coating in parmesan cheese.
Ingredients you will need
- Frozen brussels sprouts
- Olive oil
- Salt and pepper
- Garlic powder
- Onion powder
- Grated parmesan cheese
How to Roast Frozen Brussel Sprouts
Step 1: Preheat your oven to 400 degrees. Place the frozen brussels sprouts in a bowl and drizzle them with olive oil, garlic powder, onion powder, salt and pepper. Stir it all up to combine.
Step 2: Place the sprouts on a nonstick baking sheet and spread them out in an even layer. Roast the brussels at 400 degrees for 10 minutes.
Step 3: At this point, the sprouts should be soft enough to cut through. Cut each brussel sprout in half, then return to the baking sheet. The easiest way to do this is by using kitchen scissors.
Step 4: Place the brussels sprouts back in the oven and cook them for an additional 10 minutes. Stir the brussels, then sprinkle the grated parmesan cheese over the top.
Step 5: Continue to roast the brussels for 10-15 minutes, until the cheese is melted and browning with crispy edges.
Storing and Reheating
- How to store: Store any leftover roasted brussels sprouts in an airtight container in the refrigerator for up to 3-4 days.
- How to reheat: Place leftover brussels sprouts on a baking sheet and reheat them at 375 degrees until hot.
Can you freeze brussel sprouts after roasting?
I would not recommend freezing these brussels sprouts since they were previously frozen. This would result in a very mushy texture once thawed again.
More recipes using frozen vegetables
Roasted Frozen Brussel Sprouts
Ingredients
- 24 oz frozen brussels sprouts
- 1/3 cup olive oil
- 1/2 teaspoon pepper
- 1 teaspoon salt
- 1/2 teaspoon garlic powder
- 1/2 teaspoon onion powder
- 1 cup freshly grated parmesan cheese
Instructions
- Preheat your oven to 400 degrees.
- Toss the brussels sprouts in a bowl with the olive oil, pepper, salt, garlic powder, and onion powder until coated.
- Place the frozen brussel sprouts on a nonstick baking sheet, spreading them out into an even layer.
- Roast the brussels at 400 degrees for 10 minutes.
- At this point the brussels should be soft enough to cut through. Cut each brussel sprout in half and place it back on the baking sheet (I use kitchen scissors for this step).
- Place the brussels sprouts back in the oven and cook for an additional 10 minutes.
- Stir the brussels, then sprinkle the grated parmesan cheese on top.
- Continue to roast the veggies for 10-15 minutes, until the cheese is melted and browning with crispy edges.
WAY too much salt, but otherwise superb. Cut it back to 1/4 tsp. People can always add a bit more if they want.
Definitely should salt to taste 🙂 So glad you enjoyed the recipe!
These look delicious! Can you substitute grated parmesan cheese?
Sure!
We love Brussels sprouts and I would love to try this recipe since we’re staying home and relying on what’s in our freezer, but this seems like a really long time in the oven for a food that’s technically already cooked. I’m worried they’ll be super soft by the time they’ve been in there almost an hour. Are you starting with frozen raw sprouts? Or the typical cooked and frozen ones? Thanks!
They are raw, and also frozen, which take longer to cook. They are definitely not mushy. I cook them this long so that they get crispy cheese edges! Hope that helps 🙂