Melt butter in 9X13 baking pan.
Place berries, sugar and water in a pot and bring to a quick boil. If the berries are particularly sweet, you might not need the full cup of sugar in the berry mixture. If you’re using lemon juice instead of red berries, add it to the berry mixture.
While berries are coming to a boil, mix 2 cups sugar and flour in a large bowl. Add in milk and stir well until smooth.
Pour batter over melted butter. Add hot berry mixture to the pan. Don’t stir. Sprinkle with cinnamon.
Bake in a 350 degree oven for 30 to 45 minutes until mixture is bubbly and top has started to brown. The center will be somewhat jiggly but not loose. Let cool 15 minutes before serving. Yeah, right. That’s a big joke. But in order for my recipe to be technically correct, I had to tell y’all to do that.