Pan-Seared Mushroom & Walnut Cakes with Zucchini

Ingredients

• 1 tablespoon olive oil, divided
• 1 cup finely chopped cremini mushrooms
• 1/4 cup finely chopped walnuts
• 1/4 cup cooked brown or green lentils
• 1/4 each yellow onion, grated or very finely minced
• 1 clove garlic, minced
• 1 tablespoon ground flaxseed mixed with 3 tablespoons water (flax egg)
• 1 teaspoon dried Italian seasoning
• 1/4 teaspoon salt (or to taste)
• 1/8 teaspoon black pepper (or to taste)
• 1 large zucchini, spiralized into noodles or finely julienned
• 1 cup low-sodium marinara sauce