These butternut lentil burgers are oven-baked patties built from roasted squash, red lentils, garam masala, and wheat gluten — a combination that holds together well and actually tastes like something. At 224 calories and 11 grams of protein per patty, they make a practical weeknight option that doesn’t require you to compromise on flavour. Six patties come out of one batch, which is exactly the right number to keep you fed without standing over a stove every day.
What makes this version work
Two things matter here. First, roasting the butternut squash rather than steaming or boiling it drives off excess moisture — wet squash turns patties into mush that won’t hold a shape. Second, the wheat gluten acts as the structural binder, doing the job that egg or flaxseed does in other veggie burgers but with more protein and a firmer bite. The double cookie-sheet press during baking is the other non-negotiable: it keeps the patties flat and dense instead of puffed and crumbly. Skip either of those steps and you’ll be eating a very flavourful pile of crumbs.
Smart swaps
- Wheat gluten: This is vital flour — find it in health food stores or online. Do not substitute all-purpose flour; it won’t bind the same way and the texture will suffer significantly.
- Sesame oil (not toasted): The recipe specifically calls for untoasted sesame oil, which has a neutral flavour. Toasted sesame oil is much stronger and will overpower the garam masala — use a neutral oil like avocado or sunflower if you can’t find untoasted.
- Tomato chutney: Any thick tomato-based chutney works. Avoid watery salsas or fresh tomato — extra liquid will throw off the patty consistency.
- Red lentils: Use cooked red lentils as listed. Green or brown lentils are drier and chunkier; they’ll change the texture noticeably and make mashing harder.
- Panko breadcrumbs: Regular fine breadcrumbs absorb more moisture and can make the patty dense. Panko keeps a slightly lighter texture — worth sticking with if you can.
Leftovers and meal prep
Fully baked patties keep well in an airtight container in the fridge for up to 4 days. For longer storage, freeze them in a single layer on a baking sheet first, then transfer to a zip-lock bag — they’ll keep for up to 3 months without sticking together. Reheat from the fridge in a dry skillet over medium heat for 3–4 minutes per side, or in a 350°F oven for about 10 minutes; both methods restore some of the outer firmness that the microwave kills. From frozen, go straight into a 375°F oven for 18–20 minutes, flipping once halfway. The unbaked mixture can also be portioned and refrigerated overnight if you want to bake fresh patties the next day — just bring it to room temperature for 15 minutes before shaping.
Troubleshooting
- Patties fall apart when handled: The squash was likely too wet before mixing. Next time, let the roasted squash cool completely and pat it dry. You can also add an extra tablespoon of panko to tighten the mix.
- Mix is too dry to shape: Red lentils vary in how much water they absorb during cooking. Add tomato chutney one teaspoon at a time until the mixture just holds together when pressed.
- Patties puffed up despite the weighted sheet: The top cookie sheet wasn’t heavy enough, or it shifted during baking. Add an oven-safe pan or a cast iron skillet on top to increase the weight.
- Garam masala flavour is too strong: Spice blends vary widely in intensity by brand. Start with half a tablespoon if yours is particularly pungent — you can always dust a little more on the outside before baking.
- Outside is golden but inside still feels soft after 35 minutes: Oven temperatures vary. Give them another 5–8 minutes and check that your oven is actually reaching 350°F; an inexpensive oven thermometer will tell you fast if it’s running cool.
Flavourful Butternut Lentil Burgers
Equipment
- Rimmed baking sheet (2 required)
- Parchment paper or silicone baking mat (2 required)
- Large mixing bowl
- Potato masher
- ½-cup measuring cup (for portioning patties)
- Instant-read thermometer (nice-to-have)
Ingredients
- 1 cup butternut squash cubed, about 140g
- 2 tablespoons extra virgin olive oil 30ml
- ¼ cup tomato chutney 60ml
- ½ cup red lentils cooked, about 100g
- 2 tablespoons sesame oil not toasted, 30ml
- 1 tablespoon garam masala
- 1 teaspoon sea salt
- 1 cup panko breadcrumbs about 60g
- 1 cup vital wheat gluten about 144g
Instructions
- Preheat the oven to 400°F / 200°C (205°C fan-forced). Toss the butternut squash cubes with the olive oil, spread in a single layer on a rimmed baking sheet, and season lightly with salt. Roast for 45 minutes or until tender and the edges begin to caramelise. Set aside.1 cup butternut squash, 2 tablespoons extra virgin olive oil, 1 teaspoon sea salt
- Lower the oven to 350°F / 175°C (180°C fan-forced). Line a cookie sheet with parchment paper or a silicone baking mat. Have another piece of parchment paper or baking mat and another cookie sheet ready.
- Combine the roasted squash, tomato chutney, cooked red lentils, sesame oil, garam masala, and sea salt in a large bowl. Combine well with a potato masher.1 cup butternut squash, ¼ cup tomato chutney, ½ cup red lentils, 2 tablespoons sesame oil, 1 tablespoon garam masala, 1 teaspoon sea salt
- Add the panko breadcrumbs and vital wheat gluten and stir well.1 cup panko breadcrumbs, 1 cup vital wheat gluten
- Divide preparation into ½ cup portions. Shape into burgers, about ½ inch thick. You should have 6 burgers.
- Place burgers on a prepared cookie sheet. Cover with another layer of parchment paper or baking mat and top with a second cookie sheet to keep burgers from puffing up too much.
- Bake for 35 minutes (no need to flip halfway through) until burgers are golden brown and firm. Let cool on the sheet for 5 minutes before serving.
Notes
Nutrition
Your questions, answered
Can I make these without wheat gluten?
Not with the same result — wheat gluten is what holds the patty together and gives it a firm, sliceable texture. If you need a gluten-free version, try a combination of cooked quinoa and chickpea flour, but expect a softer, more crumbly patty.
Do I need to cook the red lentils before I start?
Yes — the recipe calls for cooked red lentils, not dry. Cook them ahead of time and let them cool fully before mixing; hot lentils will make the mix too wet and the patties won’t firm up properly.
Can I pan-fry these instead of baking?
You can, but the patties are softer before baking and need careful handling. Use a well-oiled non-stick skillet over medium-low heat and cook for about 5 minutes per side — they’ll be slightly less firm in the centre than the oven version.
Are these patties vegan?
Yes, every ingredient in the recipe is plant-based. Just double-check your panko breadcrumbs, as some brands include milk powder.
Can I shape and freeze the patties before baking?
Yes, and it works well. Freeze the raw shaped patties on a lined tray until solid, then bag them. Bake from frozen at 375°F for about 40–45 minutes with the weighted sheet on top.
What buns or toppings work best with these?
A sturdy whole-grain or brioche bun holds up better than a soft white bun, which gets soggy fast. The garam masala flavour pairs well with yogurt-based sauces, mango chutney, or a simple cucumber-mint raita — anything cool and slightly acidic cuts through the spice.
More burger recipes to try
- Veggie Sauce Burger Perfection
- Five Guys Veggie Sandwich Style
- McAloo Tikki Burger Recipe
- Spicy Paneer Burger Recipe