Easy and Delicious Costco Fire Roasted Vegetables Recipe
Easy and Delicious costco fire roasted vegetables recipe
If you’ve ever walked through Costco and paused in front of their big freezer section—the one with the giant bags of veggies—you’ve probably seen the famous Costco Fire Roasted Vegetables. They’re smoky, flavorful, and one of the biggest Costco favorites for anyone who wants a fast and healthy side dish. But what if you could recreate that same delicious flavor at home, using simple ingredients you can grab from any location (no matter your zip code)?
Good news—you absolutely can.
Today I’m sharing a super easy, meal-prep-friendly, TikTok-inspired method (hello tiktok - make cooking videos!) that feels just like the Costco same version but even fresher, hotter, and more customizable. This recipe relies on everyday produce: brussels sprouts, red onion, olive oil, and a few pantry seasonings you probably already have.
Whether you’re cooking for your family, meal prepping for the week, or just want a fast veggie boost to go with dinner, this recipe will become one of your new go-to Costco-style favorites.
Why People Love Costco Fire Roasted Vegetables
Costco has earned its reputation as the king of convenience. Their fire-roasted vegetables are:
Pre-cut
Pre-seasoned
Perfectly charred
Packed with smoky flavor
Easy to add to bowls, tacos, pastas, and more
But making them at home has major advantages:
You control the salt, oil, and spice level
You get a fresher roasted flavor
You can add or swap ingredients
You save money
You can make a giant batch for the week
And you’ll be surprised how little effort it takes to get that same Costco same flavor profile—without needing a giant warehouse freezer bag.
Homemade Costco Fire Roasted Vegetables Recipe
This recipe uses a hot oven to create that signature fire-roasted char. If you want it even smokier, you can pop the veggies under the broiler for one minute at the end. Trust me, the flavor is incredible.
Ingredients You’ll Need
These are easy to find whether you shop at Costco, your favorite grocery store, or go to the instacart website, or a small market in any zip code.
Main Veggies
2 cups brussels sprouts, trimmed and halved
1 red onion, sliced into thick wedges
1 red bell pepper, sliced
1 green bell pepper, sliced
1 zucchini, sliced
1 cup mushrooms, halved (optional but delicious)
Seasoning
2 tablespoons olive oil
1 teaspoon garlic powder
1 teaspoon smoked paprika (this is KEY to the fire-roasted flavor!)
½ teaspoon onion powder
½ teaspoon oregano
½ teaspoon sea salt
½ teaspoon black pepper
Optional: pinch of red pepper flakes for heat
Instructions (Step-by-Step)
This recipe is inspired by viral tiktok - make cooking videos—fast, visual, simple, and satisfying.
1. Preheat Your Oven
Set your oven to 425°F (218°C).
This high heat is what gives the veggies that perfect roasted edge.
2. Prep the Vegetables
Trim the brussels sprouts, slice your red onion, and chop all other vegetables into evenly sized pieces.
Consistency helps them roast evenly.
3. Toss With Olive Oil + Spice Mix
Place everything in a large bowl and drizzle with olive oil.
Sprinkle on:
garlic powder
smoked paprika
onion powder
salt
black pepper
oregano
Mix until everything is evenly coated and glossy.
4. Spread on a Baking Sheet
Line a sheet pan with parchment or foil for easy cleanup.
Spread the vegetables in a single, even layer.
TIP: If the veggies are stacked too close, they will steam instead of roast—meaning no char.
5. Roast Until Perfectly Charred
Bake for 22–28 minutes, tossing halfway through.
You’re looking for:
golden edges
soft centers
small charred bits that mimic fire roasting
For extra smoky flavor, broil the veggies for 1 minute at the end.
6. Serve Hot
Enjoy your homemade Costco-style roasted vegetables right from the oven—or use them in bowls, wraps, salads, and more.
Ways to Serve Your Fire Roasted Vegetables
This recipe is versatile and works with so many meals. Here are some of the most popular pairings:
1. Add to Grain Bowls
Combine with quinoa, brown rice, or cauliflower rice.
Top with chicken, tofu, or salmon.
2. Toss Into Pasta
Add your fire-roasted veggies to penne or spaghetti with fresh parmesan.
3. Turn Into Tacos
Add veggies to warm tortillas and finish with salsa, avocado, and lime.
4. Mix Into Breakfast Scrambles
Throw them into eggs, omelet cups, or tofu scrambles.
5. Use as a Meal Prep Side
Store in containers and add to lunches all week.
6. Serve With Rotisserie Chicken
Costco’s rotisserie chicken + homemade roasted veggies = perfect dinner.
Why Brussels Sprouts + Red Onion Make This Dish Amazing
These two ingredients are what make this recipe taste like the real Costco favorites version.
Brussels Sprouts
When roasted at high heat, brussels sprouts become crispy, nutty, and slightly sweet. They soak up seasoning beautifully and add real substance.
Red Onion
Red onion caramelizes in the oven, developing natural sweetness that balances the smoky flavors. It also adds a gorgeous color pop that looks so good in bowls and TikTok cooking videos.
Together, they’re the “secret duo” that gives this recipe that signature fire-roasted vibe.
Storage + Meal Prep Tips
This recipe is PERFECT for meal prepping and stays delicious throughout the week.
Refrigerate
Store in an airtight container for up to 4 days.
Reheat
Reheat in:
oven for 5 minutes at 400°F
stovetop skillet for 3–5 minutes
air fryer for 3–4 minutes
Avoid microwaving if you want to keep the vegetables crispy.
Freeze
Yes, you can freeze them!
Just spread on a tray, freeze individually, then transfer to a freezer bag.
Final Thoughts
This homemade Costco fire roasted vegetables recipe gives you everything you love about the store version—fresh flavors, smoky char, colorful veggies—but with more flexibility and way more value. Whether you’re recreating a viral tiktok - make recipe or trying to eat healthier without spending a fortune, this simple dish is an easy win for every kitchen and every zip code.
The combination of brussels sprouts, red onion, and olive oil creates a balanced, savory flavor that tastes great with everything from weeknight dinners to big family meals. Once you try it, you’ll understand why this recipe instantly becomes one of everyone’s Costco favorites.