Ingredient Substitution Guide

1. Step 1

   Heat the oven to 375 degrees. 

2. Step 2

   Warm a cast-iron or other oven-safe skillet (see Tip) over medium-high heat. Add the olive oil, then the sliced onion. Stir and reduce the heat to medium. Cook, stirring frequently, until the onions are soft, about 4 minutes. 

3. Step 3

   Stir in the asparagus and a pinch of salt, about ¼ teaspoon. Cover and cook for 4 minutes, until the asparagus is bright green and crisp.

4. Step 4

   Remove the skillet from the heat and add the spinach. Stir it until it wilts. 

5. Step 5

   Use your hands to gently press out any excess water from the tofu, then crumble it into the bowl of a food processor. Add the nutritional yeast, apple cider vinegar, onion powder, garlic powder, turmeric powder and the remaining 1½ teaspoons salt. Blend until the ingredients are combined and the tofu is smooth. 

6. Step 6

   Transfer the blended tofu to the skillet and stir to combine it with the vegetables. Smooth the top of the tofu with a spoon or a spatula. 

7. Step 7

   Bake for 50 minutes, until the surface of the frittata is golden. Cool for 10 minutes before serving hot. 

Tip

• The thickness of your frittata will depend on the pan size. A 10-inch skillet is ideal but  any oven-safe pan will work.