Roasted Beet and Lentil Burgers

Steps

1. 1

   Roast the beetsOven 400°F / 205°C

   • Preheat oven to 400°F (200°C).
   • Place trimmed beets on a large baking sheet, drizzle lightly with water, cover loosely with foil, and roast for 45–50 minutes, until a knife pierces the center with no resistance.
   • Let cool for 10 minutes, then peel away the skin (it should slide off easily) and cut into rough chunks.

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   Ready when: Beets are fork-tender and skin easily rubs off

   Tip: Wear gloves while peeling to avoid staining your hands

2. 2

   Cook the lentils

   • In a medium saucepan, bring vegetable broth to a boil.
   • Add rinsed red lentils, stir once, and return to a boil.
   • Reduce heat to medium-low and simmer uncovered for 15–18 minutes, stirring occasionally, until lentils are completely soft and have absorbed most of the liquid.
   • The mixture should look like a thick paste.
   • If excess liquid remains, drain it off.

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   Ready when: Lentils are creamy and fall apart when pressed, liquid mostly absorbed

   Tip: Red lentils cook quickly and break down; don't over-stir or they'll become too mushy

3. 3

   Sauté aromatics

   • While lentils cook, heat 1 tablespoon of olive oil in a small skillet over medium heat.
   • Add diced onion and cook for 4–5 minutes, stirring often, until softened and just beginning to turn golden.
   • Add minced garlic and caraway seeds, and cook for 1 minute more until fragrant.
   • Set aside to cool slightly.

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   Ready when: Onion is soft and pale golden, garlic is fragrant but not brown

   Tip: Don't let the caraway seeds burn; they should just release their aroma

4. 4

   Mix burger base

   • Transfer cooled cooked lentils to a large bowl.
   • Add roasted beet chunks, sautéed onion mixture, Dijon mustard, panko breadcrumbs, and the beaten egg.
   • Using a wooden spoon or rubber spatula, mix gently but thoroughly until all ingredients are well combined.
   • The mixture should hold together but remain slightly chunky from the beet pieces.

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   Ready when: All ingredients are evenly distributed and mixture holds together when squeezed

   Tip: Don't over-mix; you want some texture from the beets, not a smooth purée

5. 5

   Season and chill

   • Taste the mixture and season with kosher salt and freshly ground black pepper to your preference.
   • Cover the bowl and refrigerate for at least 30 minutes (up to 4 hours ahead).
   • Chilling allows the mixture to firm up so the patties hold their shape better during baking.

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   Ready when: Mixture is cool and slightly firmer

   Tip: A chilled mixture is much easier to handle and shape into uniform patties

6. 6

   Shape the pattiesOven 375°F / 190°C

   • Preheat oven to 375°F (190°C).
   • Divide the chilled mixture into 4 equal portions (about 5 ounces / 140g each).
   • Using your hands (wet your palms to prevent sticking), gently shape each portion into a patty about 3.5 inches wide and ¾ inch thick.
   • Place patties on a parchment-lined baking sheet, spacing them 2 inches apart.

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   Ready when: Patties are uniform, compact, and hold together

   Tip: Wetting your palms prevents the mixture from sticking to your hands

7. 7

   Brush and bakeOven 375°F / 190°C

   • Brush the top and sides of each patty lightly with the remaining 1 tablespoon olive oil.
   • Place the baking sheet in the preheated 375°F (190°C) oven and bake for 18–22 minutes, until the exterior is lightly browned and the edges are set.
   • The patties should be heated through and hold together firmly but may still be slightly tender inside.

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   Ready when: Top and edges are golden-brown, patties are firm and hold their shape

   Tip: Don't flip the patties; a gentle bake from one side gives them a sturdy, golden crust

8. 8

   Cool and serve

   • Remove the baking sheet from the oven and let the patties rest on the hot pan for 5 minutes.
   • This final resting allows them to firm up further.
   • Transfer to a serving platter or individual plates.
   • Serve immediately on toasted burger buns with your choice of toppings: horseradish cream, tangy mustard, caramelized onions, fresh greens, or thick tomato slices.

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   Ready when: Patties are warm and set firmly

   Tip: Serve immediately while the exterior is still crispy; they soften slightly as they cool