Step 1: Sauté the Aromatics

• Heat olive oil in a skillet over medium heat.

• Add diced onion and bell pepper, sauté for 4–5 minutes until softened.

• Stir in minced garlic and cook for another minute until fragrant.

Step 2: Cook the Vegetables and Lentils

• Add mushrooms to the skillet and sauté for 5–7 minutes until they release their moisture and start to brown.

• Stir in the cooked lentils and mix well to combine with the vegetables.

Step 3: Add the Sauce Ingredients

• Add crushed tomatoes, tomato paste, soy sauce or tamari, maple syrup, and apple cider vinegar.

• Stir in smoked paprika, cumin, chili powder, salt, and pepper.

• Mix everything thoroughly to ensure even coating of the ingredients.

Step 4: Simmer to Perfection

• Reduce the heat to low and simmer the mixture uncovered for 10 minutes.

• Stir occasionally, allowing the flavors to meld and the sauce to thicken.

Step 5: Assemble the Sandwiches

• Lightly toast the sandwich buns if desired.

• Spoon generous portions of the filling onto the bottom half of each bun.

• Add any optional toppings like pickles, lettuce, or vegan cheese slices.

• Cover with the top bun and serve warm.