In a mixing bowl, cream butter and sugar until fluffy. Beat in eggs, one at a time. Add sour cream and vanilla. Mix well.

Combine the flour, baking powder, baking soda, salt and cinnamon. Stir into creamed mixture just until moistened. Fold in strawberries and 1/2 cup nuts.

Pour into greased 8x4x2 inch loaf pan. Sprinkle with remaining nuts.

Bake for 60 to 70 minutes or until a toothpick inserted in the center comes out clean. I check my loaf at about 50 minutes, as I have a hot oven.

Cool for 10 minutes then remove from pan to a wire rack to cool completely.