Preheat the oven to 350°F (176°C). Grease and flour the lamb cake mold.
Pour the flour, granulated sugar, and baking powder to the stand mixer bowl, mix on low speed for 15 to 20 seconds.
Add the egg replacers, non-dairy milk, melted vegan butter, vegan sour cream or , and vanilla extract in a large bowl and use
an electric mixer to beat on medium speed for 30 seconds to 1 minute, until a batter forms. Do not overmix.
If necessary, scrape down the sides of the bowl with a rubber spatula.
Place the lamb mold side with the face down first on a baking sheet. Pour in the batter. Then, place the mold with the hole on top.
Bake in the oven for 50 to 55 minutes. You can stick a toothpick in the venting hole and it should come out mostly clean.
Carefully, remove top mold. Your cake make bake into it, mine did not, that is okay. Then, allow the cake to cool for 15 to 20 minutes in the bottom mold. Use a knife to carefully loosen the sides and then flip it out onto a cutting board.
Allow it to cool 30 minutes to an hour on the cutting board, baking pan, or wire rack. Then, place in the freezer and freeze overnight, at least 12 hours, covered with foil.