Preheat oven to 350. Dust raspberries with 2 T. flour, set aside. Mix remaining flour, sugar, baking powder, cinnamon and salt. Mix egg & oil; add flour mixture alternately with milk. Fold in raspberries. Fill standard size greased muffin cups (or paper ones) 2/3 full. Combine nuts, brown sugar & remaining cinnamon; sprinkle over muffins and bake 20-25 min. Stir together powdered sugar & lemon juice. When muffins are slightly cooled drizzle sugar/lemon mixture on muffins.