Okay, Grandmommy, I Need Your Help ...

Looking at the peaches in the bowl every morning, I started thinking about the peach cobbler that Grandmommy used to make. Not the pain-staking rolled out crust cobbler, but the quick and easy cobbler.  The one I thought I could make.  So I pulled up the recipe, but I needed more explanation.

Grandmommy, help? Here is what I had to work with:

Here is what I did. I melted a 1/2 cup butter and poured it into a 9"x9" pan.  Then in a bowl I mixed together: 1 cup flour, 1 cup sugar, 1 cup milk, and 1 tsp baking powder, 1/2 teaspoon salt and 1 teaspoon vanilla.  The recipe said to "spoon into pan", but it was a really thin batter - thinner than pancake batter.  So I poured it into the pan. It was really shallow in the pan over the butter. I can't imagine using a 9"x13" pan. But maybe I should have? Then I put the fruit on top (a bag of frozen peaches - was that not enough fruit?) and put it in the oven. 40 minutes or so?  Here is what came out:

It was edible, but not like Grandmommy's.  The edges were hard and chewy and not really edible. The middle was okay. It was gooey and a big scoop of ice cream or whipped cream fixed everything.  But it wasn't "right".

What did I do wrong, Grandmommy? I need your help. How many of these have you made? How many have I eaten over the years? I remember picking the fresh peaches off your trees and all the canning of fresh peaches and jellies and jams. I wanted to capture that memory, but it just fell flat.

Help!