Heat oven to 350 degrees. Combine ingredients for cinnamon mixture, stir until crumbly and set aside.

For batter, beat together butter and sugar until light and fluffy. Add egg and vanilla; mix until well blended. Sift together flour, baking powder and salt; add to creamed mixture alternately with milk. Stir in oats.

Pour half of batter into a greased and floured 8 inch square baking pan. Sprinkle with half of the cinnamon mixture and raisins. Top with remaining batter and sprinkle with remaining cinnamon mixture. Bake for 40-45 minutes. Makes 9 servings.