Hot Spinach and Artichoke Dip

cream cheese, at room temperature

mayonnaise

box (10 ounces) frozen chopped spinach, thawed and squeezed dry

large jar marinated artichoke hearts, drained, chopped and any tough leaves removed (about 1 1/2 cups)

green onions, sliced thin

grated Parmesan

shredded Mozzarella cheese

red pepper flakes

garlic powder

Worcestershire sauce

Salt to taste (taste mixture, then add 1/4 teaspoon if salt is needed)