If using fresh baby spinach, lightly saute it with a little bit of cooking oil. . If using frozen spinach, thaw and drain the liquid from the spinach using a paper towel or cheesecloth.
In a large bowl, mix together the baby spinach, shredded mozzarella cheese, shredded parmesan, greek yogurt, artichokes, salt, and pepper with a spatula.
Transfer mixture into a greased baking dish (I used an 8-inch cast-iron skillet).
Bake 30 - 35 minutes, then broil 2 -3 minutes in the end to add a nice golden brown color.
Serve with your favorite bread, chips, and veggies. Enjoy!
Notes
*Spinach will shrink down to roughly 1 cup. If using frozen spinach, measure with the thawed out spinach** I personally don't think it needs much additional salt and pepper. Add a touch depending on your preference.