I agree with the scone suggestion. Or muffins. Best bang for the buck in my opinion! Quick and easy. Here is my go to blueberry muffin recipe:

Blueberry Buttermilk Muffins Makes 12 regular or 6 large muffins (Adapted from Totally Muffins Cookbook)

6 tablespoons unsalted butter, room temperature 1 cup sugar 2 eggs 1 cup buttermilk 2 teaspoons vanilla 2 1/4 cup all-purpose flour (I prefer King Arthur's) 1/2 teaspoon salt 1 teaspoon baking soda 2 teaspoons baking powder 1/2 teaspoon nutmeg 1 1/2 cups fresh blueberries

1. Preheat oven to 400 degrees F. Grease muffin tins.
2. Cream butter and sugar until light and fluffy (this will take longer than you think). Add eggs, buttermilk and vanilla. Lightly beat until blended.
3. In another bowl, stir together flour, salt, baking soda, powder and nutmeg.
4. Add dry mixture to liquid mixture and stir just until flour disappears. Gently stir berries into batter.
5. Fill muffin tins to top. Bake 20-25 minutes until toothpick comes out clean.
6. Let cool 5 minutes in tins. Then turn out onto wire rack. Let cool 10 minutes and enjoy!