First, thaw the spinach and squeeze out all excess water to avoid soggy breadsticks. Combine it with softened cream cheese, garlic, seasonings, and cheeses in a mixing bowl. Use a hand or stand mixer to blend everything until creamy and smooth.
Roll out one pizza dough tube into a rectangle on parchment paper. Cut it into one large triangle and two smaller ones from the corners to the center. Arrange the smaller triangles together to form a matching second triangle.
Spread spoonfuls of the spinach dip evenly over the large triangle. Make sure the edges are covered so the filling doesn’t spill out during baking. This creates the perfect base for your Christmas tree.
Place the second triangle over the spinach dip layer. Cut slices from the center to the edges, leaving about an inch intact in the middle. Twist each slice to form the tree shape, giving more twists to longer slices for a natural tree look.
Transfer the tree to a baking sheet and bake at 350°F for 32 minutes. Check the bottom to ensure it’s cooked through. Once baked, brush the warm breadsticks with melted butter, garlic salt, and additional seasonings for extra flavor.