Mushroom-Lentil Patty with Caramelized Onions
Hearty plant-based patties made with earthy mushrooms and lentils, topped with sweet, golden onions for a satisfying meal. This vegetarian-inspired vegetarian (gluten-free) ready in about 45 minutes pairs yellow onion, brown lentils, mushrooms for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 1 cup yellow onion
- 1/2 cup brown lentils
- 1 cup mushrooms
- 1/4 cup fresh parsley
- 1 egg
- 1/2 cup breadcrumbs
- 1/4 cup all-purpose flour
- 2 tablespoons olive oil
- 4 burger buns
Instructions
- Step 1: In a medium skillet over medium-low heat, heat 1 tablespoon olive oil and cook 1/2 cup chopped yellow onion for 15-20 minutes, stirring occasionally, until deeply golden and caramelized; set aside.
- Step 2: In a bowl, combine 1 cup cooked brown lentils (from 1/2 cup dried), 1 cup finely chopped mushrooms, 1/2 cup chopped yellow onion, 1/4 cup chopped parsley, 1 egg, 1/2 cup breadcrumbs, and 1/2 teaspoon salt and 1/4 teaspoon black pepper; mix until cohesive.
- Step 3: Divide mixture into 4 portions and shape into patties. Lightly coat each patty with 1/4 cup all-purpose flour, pressing gently to adhere.
- Step 4: Heat 2 tablespoons olive oil in a large skillet over medium heat. Add patties and cook for 4-5 minutes per side, until golden brown and crisp at the edges.
- Step 5: Serve patties on toasted buns with 2 tablespoons caramelized onions per patty.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Mushroom-Lentil Patty with Caramelized Onions take to make?
Total time is about 45 minutes (25 min prep + 20 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Mushroom-Lentil Patty with Caramelized Onions?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep yellow onion from drying out.
Can I substitute ingredients in Mushroom-Lentil Patty with Caramelized Onions?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Mushroom-Lentil Patty with Caramelized Onions for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Mushroom-Lentil Patty with Caramelized Onions gluten-free?
Yes — this recipe is tagged gluten-free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
Absolutely wonderful.
- ★★★★☆
Solid recipe. Not groundbreaking but definitely making it again.
- ★★★★☆
Really good but took about 10 minutes longer than stated.
