http://www.budget101.com/kids.htm#Easy_Bake_Mixes
has several of these recipes
White Frosting Mix
2 cups powdered sugar -- sifted
3 tablespoons instant nonfat milk powder
6 tablespoons vegetable shortening
In a medium bowl, combine powdered sugar and milk powder. Stir with a wire whisk to blend. With a pastry blender cut in shortening. Spoon about 1/3 cup of mixture into each of 8 small bags. Seal tightly. Makes 8 packages. forchocolate frosting, add 1/2 cup unsweetened cocoa.
To use: Combine 1 package of the above mix plus 3/4 teaspoon water in a small bowl. Stir well with a spoon until smooth and creamy. Makes about 1/4 cup frosting. A drop or two of vanilla may be added if desired.
Brownies
2 1/2 T. sugar
1 t. oil
1/8 t. vanilla extract
4 t. chocolate syrup
2 1/2 T. flour
Sir together sugar, oil, vanilla, chocolate and flour until the batter is smooth. Pour batter into greased and floured pan. Bake 15 minutes.
Chocolate Cake
6 teaspoons flour
4 teaspoons sugar
1/4 teaspoon baking powder
1 teaspoon unsweetened cocoa
3/4 teaspoon shortening
1 pinch salt
6 teaspoons milk
Mix together the flour, sugar, baking powder, cocoa, shortening and salt. Add milk and stir until smooth. Pour into greased baking pan that comes with the toy oven. Bake for 12 to15 minutes. If you want white cake, omit the cocoa and add a drop or two of vanilla with the milk. Makes 1 serving.
Quick Cake
2 tablespoons commercial cake mix -- such as Jiffy 1 tablespoon water
Mix cake mix and water. Place in greased toy cake pan. Bake for 10 minutes. Makes 1 serving