Spinach Pierogi Pizza

This Polish spinoff is adapted from the Pillsbury Best of the Bakeoff. I love spinach pierogis and anything shaped like a pizza! I use home grown frozen spinach-the amount you use is up to you. It doesn't wreck the recipe to use more or less. I also make my own crust, but I'm sure a ready made crust would work too.

• Ready In: 50 mins
• Serves: 8

Ingredients

• 1  pizza crust (10 oz. if purchased)
• 8 -10  ounces frozen spinach, thawed and squeezed dry
• 1⁄2 cup onion, chopped
• 2  tablespoons butter
• 1 1⁄2 cups mashed potatoes
• 3⁄4 teaspoon salt
• 1⁄4 teaspoon white pepper
• 2  tablespoons butter
• 1⁄2 teaspoon  garlic salt
• 1  cup mozzarella cheese, shredded
• 1  cup cheddar cheese, shredded
• 1  small red onion, sliced into rings

Directions

1. Roll pizza dough out to fit a 14 inch pizza pan or a 9x13 baking pan; press dough into greased pan making it thicker on the sides. Prick the crust all over with a fork.
2. Bake at 425 degrees F for 7-9 minutes until golden.
3. Meanwhile saute onions and spinach in butter until onion is tender; stir in potatoes,salt and pepper.
4. In a small bowl, combine the butter and garlic salt; brush over partially baked crust.
5. Top crust with spinach mixture; sprinkle with cheeses and top with onion rings.
6. Bake at 425 degrees for 15-20 minutes more.