This low carb 4-ingredient roasted asparagus is the kind of simple spring side dish my cousin makes on repeat—crisp-tender stalks with dark, lacy tips that everyone grabs straight from the pan. It leans on classic Midwestern practicality: fresh asparagus, high heat, good fat, and salt. Roasting asparagus this way likely grew popular as home cooks moved from boiling vegetables to oven-roasting in the 80s and 90s, discovering that a hot oven caramelizes the natural sugars and concentrates flavor. With just four ingredients and a single sheet pan, you get bright green spears with buttery richness and a salty crunch, perfect for weeknights or holiday tables alike.
Serve these roasted asparagus spears hot, straight from the oven, while the butter is still glossy and the tips are crisp. They’re excellent next to roast chicken, seared salmon, or a simple grilled steak, and they also sit nicely beside a frittata or poached eggs for a low-carb brunch. For a lighter meal, pair them with a mixed green salad and a piece of sharp cheese. I like to pile them onto a white platter so the bright green color pops, then pass extra coarse sea salt at the table for anyone who loves a briny finish.
4-Ingredient Roasted Asparagus
Servings: 4
Ingredients
1 1/2 pounds fresh asparagus, woody ends trimmed
2 tablespoons olive oil
2 tablespoons unsalted butter, melted
1 to 1 1/4 teaspoons coarse sea salt, plus more to taste
Directions
Preheat your oven to 425°F (220°C). Line a large rimmed baking sheet with parchment paper for easier cleanup, if you like.
Trim the woody ends from the asparagus by snapping or cutting off the tough bottom inch or so. Pat the spears dry with a clean kitchen towel; dry asparagus browns and crisps better.
Spread the asparagus in a single layer on the baking sheet. Drizzle with the olive oil and sprinkle evenly with the coarse sea salt. Toss with your hands to coat, then rearrange so the spears lie in one layer without overlapping—this helps them roast instead of steam.
Roast on the middle rack for 10 to 15 minutes, depending on thickness, until the stalks are bright green, tender when pierced with the tip of a knife, and the tips are lightly charred and crispy. Thin, pencil-sized asparagus may be done closer to 10 minutes; thicker spears may need a few extra minutes.
While the asparagus roasts, melt the butter in a small saucepan or in a microwave-safe dish until fully liquid and warm, but not browned.
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