1. Preheat oven to 375 degrees F (190 degrees C). Grease and flour muffin pans or use paper liners.
2. In a large bowl, cream butter and sugar until light and fluffy. Add eggs one at a time and mix in.
3. Mix flour, baking powder and salt. Add flour mixture, alternating with milk. Mash 1/2 cup berries and stir into batter. Fold in remaining berries.
4. Fill muffin cups. Bake for 20 minutes. Remove from oven and wait 5 minutes to remove from pans.
Per Muffin: 222 kcals, 9g fat(5g saturated), 4g protein, 36g carbs, 718g sugar, 0.6g salt.