If you don't have wholemeal flour, you can use regular flour instead.
Replace the blueberries with raspberries or a diced apple or other diced fresh or drained canned fruit if wished.
Depending on the size of your muffin tin, this mixture may make more than 12 muffins. If using a 'jumbo' hole muffin tin then expect to make 6-8 muffins. Cooking time will vary depending on the size of the muffins.
These muffins are freezer friendly. Allow muffins to cool completely before packing into sealable plastic bags. Muffins can be thawed and heated in the microwave for approximately 30 seconds per muffin, depending on the size of the muffin. Muffins can be frozen up to 1 month.