Make the Alfredo sauce. In a small sauce pan, or skillet. Heat the vegan butter on medium high. Melt and then add the flour. Whisk together to make a paste(roux).
Now, add the non dairy milk to the pan and whisk to combine the milk with the roux. Whisk until fully combined. Then add the nutritional yeast, lemon juice and a pinch of salt and pepper.
Bring to a simmer, reducing heat as needed. Whisk until the sauce becomes thick and creamy. It should only take a few minutes. Add another pinch of salt and pepper if needed. Remove from heat.
Preheat the oven to 450 degrees.
Now, squeeze as much liquid out of the thawed spinach as you can.
Then roll your pizza dough out as thick as you want. I like mine really thin and crispy, so I like to press mine out into a large sheet pan. Place on a baking sheet or pizza pan that is oiled or sprayed with non stick spray.
Next, spread the vegan Alfredo sauce over the whole pizza. Then sprinkle with chopped garlic and then sprinkle with the spinach. Top with the vegan cheese.
Bake at 450 degrees for about 15 minutes or until the dough is crispy and brown. Serve! I love red pepper flakes and agave drizzled on top.