More searching netted me a recipe that called for only one egg and some evaporated milk. I wasn't scared of making evaporated Soymilk. I've done this in the past. I made the evaporated Soymilk the day ahead. Here is a link to that recipe:
Jennie came for a visit today so we made the Puto together!
First, we tried putting these in mini cupcake papers. They collapsed and leaked a bit. They still taste good but were not pretty.
We then used tiny ramekins (1/4 cup capacity). These worked great! I only have two of this size though so I had to steam them in pairs. They sell actual Puto molds. I may invest! I think this cake could make a great tres leches cake base too. I would just make more evaporated Soymilk and some condensed Soymilk too. Another day!
2 cups GF baking mix
1 cup sugar
1-1/4 teaspoons baking powder
1/2 cup evaporated Soymilk (recipe link above)
3/4 cup vanilla Soymilk
3/4 cup water
1/4 cup melted margarine, Earth Balance stick
Prepare your steamer or method of steaming.
Combine the baking mix, sugar, and baking powder in a medium bowl with a whisk. Add the evaporated Soymilk, Soymilk, water, and melted margarine. Whisk until smooth. This batter is a lot like thin pancake batter.
Pour into ramekins or other tiny molds and place in your steamer. Put the lid on and steam for 8 minutes.
Gently peel away from sides of ramekin with a knife and turn out onto a plate.