Grandma’s Garlic Roasted Brussel Sprouts

Finding a vegetable dish that the entire family genuinely looks forward to eating can feel like an impossible task. But in our family, these garlic roasted Brussels sprouts were the ultimate exception. Grandma and I both loved them so much that we made them at least two times a week! It never had to be a holiday or a special occasion to bring these to the dinner table.
If you’ve only ever had boiled or soggy sprouts, this recipe will completely change your mind. High-heat roasting transforms this humble vegetable, turning the edges incredibly crispy and caramelized while keeping the inside perfectly tender. Tossed with sweet red onions and a generous amount of savory minced garlic, it is a healthy, flavorful side dish that makes eating right feel like an absolute treat.
Why You’ll Love This Crispy Roasted Side Dish
Whether you are looking for a quick weeknight vegetable or a foolproof side for a Sunday roast, this heritage recipe checks every single box.
- Incredible Crispy Texture: Roasting at $425^\circ\text{F}$ ensures those beautiful, charred, caramelized outer leaves that taste like vegetable candy.
- Garlic Lover’s Dream: With seven full cloves of finely chopped garlic, this dish delivers an amazing punch of savory flavor in every single bite.
- Sweet Red Onion Base: The sliced red onions soften and caramelize right alongside the sprouts, adding a wonderful natural sweetness to balance the savory garlic.
- Quick & Hands-Off: With just 10 minutes of hands-on prep time, the oven does all the heavy lifting, making it perfect for busy nights.
Grandma’s Tips for the Best Roasted Brussels Sprouts
Roasting vegetables is simple, but Grandma always had a few brilliant, old-fashioned rules to make sure they turned out perfectly crispy every time:
- Dry the Sprouts Thoroughly: After trimming and halving your fresh sprouts, make sure they are completely dry before tossing them in olive oil. Excess water creates steam in the hot oven, which leads to soggy sprouts instead of crispy ones!
- Don’t Crowd the Pans: This recipe uses two full pounds of sprouts, which is why Grandma always divided them across two separate baking sheets. If you crowd them onto a single pan, they will trap steam. Give them space to get that bakery-quality char.
- The Halfway Switch: Oven temperatures can have hot spots. To get an even roast, make sure to flip your sprouts and swap the positions of your baking sheets halfway through the cooking time.
- Place Them Cut-Side Down: If you want maximum caramelization, take an extra minute to flip the sprouts so their flat, cut sides are facing directly down onto the baking pan. The direct contact with the hot sheet works absolute magic.

Grandma’s Garlic Roasted Brussel Sprouts
Equipment
- 2 15x10x1 inch baking pans
- 1 large spoon
- aluminum foil
- 1 large bowl
- 1 large fork
- 1 knife
Ingredients
- 2 lbs fresh brussel sprouts, trimmed and halved
- 3 Tbsp olive oil
- 7 garlic cloves, finely chopped
- 1 tsp salt
- ½ tsp pepper
- 2 medium red onions, cut into 1 inch slices
Instructions
- Preheat the oven to 425°.
- Divide the onions and brussel sprouts between the 2 foiled lined baking pans.
- In a small bowl, mix the oil, salt, pepper, and garlic. Drizzle half of the mixture over each pan and toss to coat completely.
- Roast from 20 to 25 minutes or until tender. Stir occasionally and switch the positions of the pans halfway.
Nutrition
Share Your Cooking!
Is there a favorite veggie dish that always reminds you of family dinners? I can’t wait to see how these crispy, garlic-packed sprouts turn out in your kitchen!
- Rate and Comment: Scroll down to the recipe card and leave a 5-star rating and comment. Your feedback makes a huge difference for my blog!
- Tag on Social: If you roast a batch, take a photo and tag @KaleandCroutons or use the hashtag #kaleandcroutons on Instagram so I can share your beautiful creations!
- Pin for Later: Save this vintage side dish to your favorite vegetable, healthy eating, or holiday cooking boards on Pinterest right now.
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