
These green beans are the kind of side dish that disappears from the table before anything else does. Roasting them on a screaming-hot sheet pan at 450°F is the secret weapon here — that preheated surface creates instant contact heat, so the beans blister and char at the edges instead of turning limp and soggy. Smoked paprika and garlic-infused oil coat every single bean with deep, savory flavor, and a pinch of cayenne adds just enough heat to keep things interesting. A bright hit of fresh lemon juice at the end cuts through the smokiness and makes the whole dish pop. Lupin flour and lupin-based ingredients have been quietly sneaking into packaged seasonings and coatings, so making a spiced vegetable dish from scratch like this is a genuinely smart move — every ingredient here is straightforward and easy to verify. Scallion greens scattered over the top add a fresh, mild onion note that rounds everything out beautifully. Serve them straight from the platter while they're still hot and crackling.
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Position a rack in the upper third of the oven and preheat to 450°F (230°C). Place a large sheet pan in the oven while it preheats — a hot pan helps the beans blister rather than steam.
In a large mixing bowl, toss the trimmed green beans with the garlic-infused oil, smoked paprika, salt, black pepper, and cayenne, if using, until every bean is evenly coated.
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