What can I use instead of fresh blueberries?
Frozen blueberries work well; do not thaw them before folding in. Dried blueberries or blackberries are also good alternatives, though texture will differ.
How do I know when the biscuits are done?
Bake until the tops are golden brown and a toothpick inserted into the center comes out clean, typically 18–22 minutes depending on oven.
Can I double this recipe?
Yes. Double all ingredients and use a larger baking dish (9x13 inch). Increase bake time by 3–5 minutes and check for doneness.
Should I use salted or unsalted butter?
The recipe calls for salted butter. If using unsalted, add a pinch of salt to the dough for balance.