Italians have been eating pizza without tomato-based sauce for years.

1 pizza crust ( pre-made, bread machine or mix)
1 medium onion, diced
1 teaspoon garlic, minced
1 tablespoon olive oil
8 ounces Italian-style grated cheese blend
    (mozzarella, provolone, etc.)
1 tablespoon fresh basil, chopped
1 cup ricotta cheese
1/2 cup spinach (defrosted), chopped and drained

Preheat oven to 425 degrees F.

Heat olive oil over medium flame. Add onion and garlic and cook until soft but not brown. Set aside.

Place the blended cheese on the crust. Bake for 5 minutes.

Remove and sprinkle on the chopped basil. Mix the drained spinach with the onion mixture. Add that to the ricotta. Spread on pizza and bake 10 minutes or until it begins to brown slightly.