Preheat oven to 400 degrees.
In a bowl, beat together the spinach and cream cheese.
Add garlic, salt, onion powder, chili powder, pepper, and Italian seasoning and beat to combine.
Add parmesan cheese and 1/2 of the cheddar or mozzarella cheese and beat to combine. (The other half of the cheddar or mozzarella cheese will be sprinkled over the filling when you shape the Christmas tree.)
Shape into Christmas tree as directed in the post.
Bake for about 22 minutes until quite golden brown on top and cooked through on the bottom.
Melt butter and stir in garlic salt and seasoning, then brush over breadsticks.