Here are my Amish Starter Chocolate Chip Muffin-cakes:
I had about 500g of starter (1/3 milk, 1/3 sugar, 1/3 flour), and to that I added...
200g butter, softened and in pieces
(Want less fat content? substitute 50 to 100g with applesauce)
3 large eggs (at room temperature)
1 cup flour (~225-250g)
2 tsps baking powder
1/2 tsp salt
1 1/2 tsp vanilla (or vanilla sugar)
150g of chocolate chips.
Preheat oven to 350F or 170C.
It's tough because you're starting with wet ingredients and adding dry ingredients, but I'd start with a bowl of your Amish/Herman dough. Then add the eggs, one at a time and use a hand-mixer or a whisk to get it all blended. Then add the butter in softened pieces, and blend some more.
Combine all dry ingredients (except the chocolate chips) in a separate bowl. Add the dry into the wet ingredients until just combined, then stir in 100g of the chocolate chips reserving some for sprinkling the tops of the muffins once their poured in their respective spots.
Pour a few tablespoons of batter into each baking cup (until it was a little more than half full). Then, sprinkle the remaining chocolate chips over the tops of each muffin cup so everyone gets at least a few initial chocolaty bites.
Bake for 13 to 18 minutes or until a toothpick comes out clean from the center. Make sure you place your tin in the center of the oven (away from the edges) an on a baking rack (not cookie sheet- unless you're using individual silicone baking forms) so it can get even air circulation from all sides. If said toothpick doesn't come out clean, then try again in 3 to 5 supervised minutes. My oven cooks very quickly, but watch for some light browning around the edges.
Makes about 18 muffin/cupcakes.