Instructions: Place rack in center of oven, and heat to 325 degrees. Lightly brush a 9- by 12 1/2-inch baking pan with canola oil, dust with flour, and tap to remove excess. Set aside.

In a medium bowl, sift together 1 1/2 cups flour, granulated sugar, baking powder, and salt; set aside. In a second bowl, whisk together egg, milk, canola oil, and vanilla. Using a rubber spatula, fold dry ingredients into egg

Spread batter evenly into prepared pan, and set aside. In a medium bowl, combine remaining 2 1/2 cups flour, brown sugar, and cinnamon. Pour melted butter over flour mixture, and toss with a rubber spatula until large crumbs form.

Sprinkle crumbs over batter, and bake, rotating pan after 10 minutes. Continue baking until a cake tester comes out clean, about 10 minutes more.

Transfer baking pan to a wire rack to cool. Dust with confectioners sugar. Using a serrated knife or bench scraper, cut into 3-inch squares. Store in an airtight container for up to 3 days.

This recipe yields one 9- by 12- by 1/2-inch cake.

Yield: 1 cake

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