Preheat your oven to 400F.
To an oven proof pan or skillet, heat olive oil over medium high heat. Sauté onions and garlic for 4-5 minutes until translucent. Add zucchini and mushroom, and season with salt, pepper, and Italian seasoning. Cook for 5-7 minutes, until the vegetables are tender.
1 tbsp olive oil, 1 small onion, 2 cloves garlic, 2 zucchini, 1 cup mushroom, ¼ tsp salt, ⅛ tsp pepper, 1 tsp Italian seasoning
Add in uncooked quinoa and combine, cooking for about 1 minute. Add in tomato sauce, water and bring to a boil.
1 cup quinoa, 15 oz tomato sauce, 1 ½ cups vegetable broth
Cover and simmer on low for 25 minutes, stirring occasionally. Remove the lid and stir in black beans and spinach. Stir until spinach is wilted, about a minute. Top with shredded cheese and and bake for 5 minutes in the oven until the cheese is melted. Option to broil for 2-3 minutes.
2 handfuls spinach, 1 cup black beans, 1 cup cheddar cheese
Remove from the oven and serve.