2 tbsp. butter, softened
1/4 c. hot water
1/2 c. orange juice
1 1/2 tbsp. grated orange rind
1 egg
1 c. sugar
2 c. flour
1 tsp. baking powder
1/2 tsp. salt
1/4 tsp. baking soda
1 c. fresh blueberries or frozen or canned, well drained

Combine butter, water, orange juice, and rind in a bowl. Add egg and mix well. Add dry ingredients and fold in blueberries by hand. Bake at 325 degrees in a greased 9 x 5 inch baking pan for 1 hour and 10 minutes. Cool on rack.