I love coffee cake, and I love blueberries. I have had this recipe hidden away in my recipe box for years now. It was stolen from the bowels of the internet somewhere, and I am sorry if I don't give proper credit, because I can't remember where it came from. It's not my recipe, and if you know where it came from let me know so I can give proper credit.
1/4c. shortening (I used lard)
2tsp. baking powder
1/4c. butter, softened
Preheat oven to 350
1. Grease and flour a 9" square pan.
2. cream together sugar and shortening, add egg and milk, mix well. Add baking powder and flour mix well then carefully fold in blueberries. Spread into the 9" pan.
3. Mix together dry ingredients for topping then add butter. Using a fork mix/mash the butter into the dry topping ingredients to form a crumbly mixture. Sprinkle on the top of the blueberry batter.
4. Bake for 45-50 minutes, make sure to test it by sticking a toothpick in it, since cooking times vary depending on your oven. Mine's older so it took almost an hour for it to cook properly.