Quiche Florentine with Artichoke Hearts and Sun-Dried Tomatoes

Ingredients (for 6 servings)

• 2 tbsp — extra-virgin olive oil
• 1 whole — yellow onion
• 1 tbsp — white wine vinegar
• 1.75 cup — unbleached all-purpose flour
• 0.5 cup — almond flour
• 0.25 cup — potato flour
• 1 tbsp — flaxseed meal
• 1 tsp — baking powder
• 6 cup — spinach
• 1 whole — 12- to 14-oz. package soft silken tofu
• 1 cup — plant milk
• 1 whole — artichoke hearts
• 0.5 cup — sun-dried tomatoes
• 2 tbsp — nutritional yeast
• 2 tsp — thyme or 1 teaspoon dried thyme
• 1 clove — garlic
• 0.25 tsp — white or black pepper
• 0 whole — Sea salt