This recipe was posted in a thread on the King Arthur Baking Circle, but I do not have the name of the poster. People were asking about an Apple Brownie recipe from another poster, and this recipe was posted as a possibility.
Apple Brownies
"hollisp, people are asking about your Apple Brownies. I have a recipe for them, which I am posting here. Is it like your recipe?" The poster says that this recipe "comes from our church cookbook, 'Lovell Cooks!' in Lovell UCC, Lovell, Maine.
2 cups apples, peeled and chopped
1 cup butter, softened
2 cups granulated sugar
2 eggs beaten
2 cups nuts, chopped (optional)
2 cups AP flour
2 tsp. cinnamon
1 tsp. baking soda
1 tsp. baking powder
Preheat oven to 350F. Lightly grease a 12x9" baking pan. Combine all ingredients and pour into prepared pan. Bake 40 minutes.