Cranberry Crumble Bars

1 ¾ cups fresh whole-berry cranberry sauce or 1 can
2 sticks unsalted butter, softened, plus more for pan
2 cups all-purpose flour, plus more for pan
1 teaspoon baking soda
1 teaspoon coarse salt
1/2 teaspoon ground cinnamon
1 1/4 cups packed light-brown sugar
1 large egg, lightly beaten
1 teaspoon pure vanilla extract
2 cups old-fashioned rolled oats
3/4 cup finely chopped toasted walnuts (3 ounces)

Preheat oven to 350 degrees. Butter a 9-by-13-inch baking pan, and line with parchment, letting 2 long sides overhang edges. Butter parchment, then flour parchment and sides of pan.

Whisk together flour, baking soda, salt, and cinnamon. Add brown sugar and butter, and stir until well combined. Mix in egg and vanilla, then oats and walnuts.

Press half the dough into pan. Spread the filling evenly over the dough, then crumble remaining dough on top of filling. Bake until golden and cooked through, about 40 minutes. Let cool completely in pan on a wire rack, about 1 hour, then lift out using parchment. Cut into 2-inch squares.

From: MarthaStewart.com