This is the one I use.
1 (.25 ounce) package active dry yeast
1/4 cup warm water (110 degrees F/45 degrees C)
3 cups all-purpose flour, divided
3 cups white sugar, divided
3 cups milk
In a small bowl, dissolve yeast in water. Let stand 10 minutes. In a 2 quart container glass, plastic or ceramic container, combine 1 cup flour and 1 cup sugar. Mix thoroughly or flour will lump when milk is added. Slowly stir in 1 cup milk and dissolved yeast mixture. Cover loosely and let stand until bubbly. Consider this day 1 of the 10 day cycle. Leave loosely covered at room temperature.
On days 2 through 4; stir starter with a spoon. Day 5; stir in 1 cup flour, 1 cup sugar and 1 cup milk. Days 6 through 9; stir only.
Day 10; stir in 1 cup flour, 1 cup sugar and 1 cup milk. Remove 1 cup to make your first bread, give 2 cups to friends along with this recipe, and your favorite Amish Bread recipe. Store the remaining 1 cup starter in a container in the refrigerator, or begin the 10 day process over again (beginning with step 2).
After removing the 3 cups of batter, combine the remaining cup of Amish Friendship Bread starter with the following ingredients in a large bowl:
2/3 cup oil
3 eggs
1/2 tsp. salt
1 tsp. vanilla
1 to 1 1/2 tsp. cinnamon
1 cup sugar
2 cups flour
1 1/4 tsp. baking powder
1/2 tsp. baking soda
Using a fork beat by hand until well blended. You can add 1 cup raisins and 1 cup nuts (optional).
Grease two loaf pans with butter, sprinkle with sugar instead of flour.
Bake at 325 degrees F for 45 minutes to 1 hour (individual oven temperatures vary). Cool 10 minutes, remove from pans. Makes two loaves of Amish Friendship Bread.
you can leave the vanilla and cinnamon out and add two crushed bananas or add raisins and a finely diced apple.