Keto Grilled Asparagus
Charred, garlicky grilled asparagus spears with olive oil, lemon, and parmesan — a fast keto side at just 2.4g net carbs per serving and ready in only 17 minutes total. Crisp-tender, smoky, and endlessly versatile alongside any protein.
Head of Nutrition · June 18, 2026
Nutrition per serving
Per serving · makes 4. Values are estimates; brands vary.
Smoky, charred, and finished with bright lemon and salty parmesan, this grilled asparagus is the kind of effortless keto side that disappears off the platter. It pairs with everything from grilled steak to baked salmon and comes together in under 20 minutes.
Ingredients
- 1 lb fresh asparagus, woody ends trimmed
- 2 tbsp extra-virgin olive oil
- 2 cloves garlic, minced
- 1/4 cup grated parmesan cheese
- 1 tbsp fresh lemon juice
- 1/2 tsp lemon zest
- 1/2 tsp kosher salt
- 1/4 tsp freshly ground black pepper
- 1/4 tsp red pepper flakes (optional)
Instructions
- 1
Preheat a grill or grill pan to medium-high heat (about 400°F). In a large bowl, toss the trimmed asparagus with olive oil, minced garlic, salt, pepper, and red pepper flakes until evenly coated.
- 2
Lay the asparagus crosswise on the grill grates so the spears don't fall through. Grill for 4 to 5 minutes per side, turning once, until charred in spots and crisp-tender.
- 3
Transfer the spears to a serving platter. Immediately squeeze the fresh lemon juice over the top and sprinkle with lemon zest.
- 4
Shower with grated parmesan while the asparagus is still hot so it softens slightly. Serve right away.
Tips & notes
- Choose medium-thickness spears for grilling — pencil-thin asparagus chars and dries out too fast, while very thick spears stay raw inside.
- For extra smoky flavor, finish with a pinch of smoked paprika or a drizzle of garlic-infused olive oil instead of the parmesan to keep it dairy-free.
- Leftovers keep in an airtight container for up to 3 days and are delicious cold, chopped into a keto salad.
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Frequently asked questions
- How many carbs are in keto grilled asparagus?
- Each serving has just 2.4g net carbs (4.6g total carbs minus 2.2g fiber), along with 118 calories, 4.5g protein, and 9.5g fat. This recipe makes 4 servings.
- Is asparagus keto-friendly?
- Yes. Asparagus is one of the most keto-friendly vegetables, with about 1.8g net carbs per 100g plus plenty of fiber, folate, and vitamin K, making it an easy fit for a low-carb diet.
- Can I make grilled asparagus without a grill?
- Absolutely. Roast the tossed spears on a sheet pan at 425°F for 12 to 15 minutes, or sear them in a hot cast-iron skillet for 6 to 8 minutes, turning, until charred and crisp-tender.
