Hello there!
I am not sure what cake recipe you had, but in case you haven't heard of this one, I just wanted to share it with you. I have an uncle who is lactose intolerent and I got this recipe from my aunt. This cake is one of the most delicious cakes I have ever tasted, it is so moist and springy! It's more moist than most cakes, unless you're an expert of course!!! If you double the recipe, you could easily pour it into any shaped pan I assume, even a race-car. I would grease the pan though. I would test it out before making the real one if you can.
It's called wacky cake;
1-1/2 cups flour
1 cup sugar
1/4 cup cocoa
1 tsp baking soda
1/2 tsp salt
1 tbsp Vinegar
1/3 cup salad oil
1 cup cold water
1 tsp vanilla
Bake at 350 degrees in greased cupcake tins or 9-inch square pan for approxamately 30 minutes or until tester comes out clean.
If you choose to double the recipe bake 1 hour in a greased 8x11 pan or until tester comes out clean.
As far as a frosting recipe, I haven't tried this one, but it looks delicious, it is a chocolate frosting for the chocolate cake;
Ingredients:
2 cups confectioners’ sugar
¼ cup cocoa powder
4 ounces (half of a tub) cold dairy-free cream cheese, such as Tofutti
6 T. cold dairy-free soy margarine, such as Willow Run
1 cup dairy free chocolate chips
½ cups unsweetened plain soy yogurt
Preparation:
1. Bring several cups of water to boil in a small stockpot.
2. In a large bowl, sift together the sugar and cocoa powder. Using an electric hand mixer at a low speed setting, combine the sugar mixture with the dairy-free cream cheese and soy margarine. Turn the mixer up to high and beat until creamy and well combined. Set aside.
3. In a heatproof bowl set over the boiling water, stir together the chocolate chips and the soy yogurt. Stirring occasionally, heat the mixture until the chocolate chips are completely melted, about 3 minutes.
4. Working quickly, add the melted chocolate to sugar and margarine mixture, beating using the hand mixer on a high speed setting until mixture comes together and holds stiff peaks. Use immediately.
Good Luck! Even if you don't use this for your son's b-day you really should try the cake recipe at least! Good Luck to you and Happy B-day to the little one!
D.