-
1
Preheat oven to 325AF.
-
2
Place rack in the center of the oven.
-
3
Prepare a 9-by-12 1/2-inch baking pan by spraying it lightly with pan spray.
-
4
In a small bowl, whisk together the egg, milk, oil and vanilla.
-
5
Set aside.
-
6
In a medium bowl, sift together 1 1/2 cups flour, sugar, baking powder and salt.
-
7
Fold the egg mixture into the dry ingredients.
-
8
Mix well.
-
9
Spread the batter evenly into the prepared pan and set aside.
-
10
In another bowl, combine the remaining 2 1/2 cups of flour, brown sugar and cinnamon.
-
11
Pour the melted butter over the mixture and combine until large crumbs form.
-
12
Sprinkle the crumbs over the batter.
-
13
Bake for 35-40 minutes (rotating halfway through) or until the cakes tests done.
-
14
Transfer to wire rack to cool.
-
15
Dust with powdered sugar (optional).
-
16
Cut into 3-inch squares (or whatever size).
-
17
Store in an airtight container for up to 3 days.
