Superb Brunch Coffee Cake - California Raisins

Ingredients

• 1 Cup firmly packed brown sugar
• 2 Teaspoons cinnamon
• 1 / 3 Cup butter or margarine, softened
• 3 / 4 Cup coarsely chopped pecans
• 1 / 2 Cup butter or margarine
• 3 / 4 Cup sugar
• 1 Teaspoon vanilla
• 3 eggs
• 1 1 / 2 Cups California raisins
• 2 Cups flour
• 1 Teaspoon baking powder
• 1 Teaspoon baking soda
• 1 Teaspoon salt
• 1 Cup light sour cream