Preheat oven to 400 degrees.

In a large bowl, mix together the cream cheese, sour cream and spinach.  Stir in the garlic, artichoke hearts, and 1/2 cup of cheese. Season with onion powder, salt and pepper and stir to combine.

To shape the holiday tree, line a large cookie sheet with parchment paper or a silicone baking mat. Unfold one of the sheets of puff pastry onto the cookie sheet and place another 1/3 of another sheet at the top.  Use your fingers and a bit of water to seal the two sheets together. Cut a triangle from the bottom corners to the center top.  Remove the trimmings and repeat the process to create a second triangle.

Spread the spinach and artichoke filling on top of the first triangle.  Sprinkle with another 1/2 cup of cheese. Place the second triangle on top of the first and stretch the pastry dough to cover the first completely. Use a pizza cutter to cut matching 1” strips horizontally on each side of the tree, leaving about 1/2" uncut in the center. Twist each cut rectangle 3-4 times on the sides to create the breadstick branches.  Cut two slices, 1/2” up from the bottom center to create a small tree trunk.

Melt the butter and garlic salt together in the microwave for 30 seconds.  Stir to combine.  Brush the entire tree with the garlic butter and top with the remaining cheese.  Bake in the oven for about 20 minutes at 400 degrees until golden brown.  Remove from heat and allow to cool slightly before serving.i