Preheat oven to 350. Use a 9" x 13" cake pan to cook this dessert. Lightly butter(or use margarine)on bottom and sides of pan.
In the cake pan, sprinkle 1/4 of the french vanilla cake mix all over bottom. Sprinkle with cinnamon and sugar mixture. Take 1 stick of margarine/butter and thinly slice all over cake mix. Sprinkle 1/4 cup of milk all over this layer. Pour half of canned peaches over all. Repeat until you have used all ingredients in order.
Place in oven for 37 minutes or until lightly golden brown. Cobbler should be set when done.
Serves approximately 10 to 12 people.