Blackberry Lemon Upside-Down Cake

2 tsp butter, melted
1/3 c packed brown sugar
1 1/2 tsp grated lemon rind
2 c fresh blackberries
1 1/4 c all-purpose flour
1 1/2 tsp baking powder
1/4 tsp salt
2/3 c granulated sugar
2 Tbsp butter, softened
1 egg
3/4 tsp vanilla extract
1/2 c milk

Pour 2 tsp melted butter into bottom of 9" round cake pan; sprinkle with brown sugar and lemon rind and top with blackberries.

Combine flour, baking powder and salt in a small bowl. Beat sugar and butter in a large bowl with a mixer on medium speed until well-blended. Add egg and vanilla; beat well. Add flour mixture to egg mixture alternately with milk, beginning and ending with flour; mix well.

Spoon batter over berries. Bake in a 350 degree oven for 40 minutes. Cool in pan 5 minutes. Loosen edges with knife; invert onto plate.

NOTES
From Cooking Light.
Untried.