Preheat oven to 350 degrees. Grease 13x9 inch pan. Set aside.
Add butter to scalded milk; set aside. Combine eggs, sugar and vanilla. Beat for 1 1/2 minutes at high speed until thick and lemon colored. In separate bowl, combine dry ingredients. Add to egg mixture. Beat 1 minute at low speed. Add milk mixture; beat for 1 minute. Be sure to use a spatula and make sure mixtures are incorporated as the egg-flour mixture is very thick and will be at the bottom of the bowl. Pour into prepared pan. Spread evenly. Bake for 30-35 minutes. Cool slightly. Prepare topping while cake is baking.