Preheat oven to 350°F and lightly grease a 9x13-inch baking dish.
Roll out one package of crescent roll dough and press it into the bottom of the prepared baking dish, making sure the dough reaches the edges. Trim or tuck any excess.
16 ounces crescent roll dough sheets
In a medium bowl, beat the softened cream cheese with 1 cup of granulated sugar, plus the sour cream, vanilla extract, and eggs until smooth and creamy.
16 ounces cream cheese, 1¼ cups granulated sugar, ½ cup sour cream, 2 teaspoons pure vanilla extract, 2 large eggs
Pour the cream cheese mixture evenly over the dough and gently spread to the edges of the baking dish.
Roll out the second package of crescent roll dough and carefully lay it over the cream cheese layer, gently pressing the dough into the sides of the pan.
Bake in the preheated oven for 25-30 minutes, or until the dough is golden brown and puffed.
In a small bowl, combine the remaining ¼ cup of sugar with the cinnamon.
1½ teaspoons ground cinnamon
Brush the melted butter over the top layer of dough, then sprinkle the cinnamon-sugar mixture evenly over the top.
2 tablespoons salted butter
Turn the oven to broil and bake the cheesecake bars for an additional 2-3 minutes, or until the sugar is melted and bubbling slightly. Keep a careful eye on the bars as they can burn easily.
Remove from the oven and let the bars cool completely before cutting into squares.