Blueberry Buckle with Lemon Sauce

Directions

1. In a large bowl, combine the flour, sugar, baking powder and salt. In a small bowl, whisk the egg, milk and butter; add to dry ingredients just until moistened. Spread into a greased 8-in. square baking dish. Top with blueberries.
2. For topping, in a small bowl, combine the sugar, flour and cinnamon; cut in butter until crumbly. Sprinkle over blueberries.
3. Bake at 350° for 45-55 minutes or until golden brown and a toothpick inserted in the center comes out clean.
4. In a small saucepan, combine the sugar, cornstarch and lemon zest; gradually stir in water until smooth. Bring to a boil over low heat, stirring constantly. Cook and stir 1 minute longer or until thickened. Remove from the heat; stir in butter and lemon juice. Serve warm sauce with buckle.