Spray a 9x13 pan with cooking spray. On the bottom, spread the 2 cans of lemon pie filling, scraping the cans to get it all. Squeeze juice of 1 lemon over the pie filling.
In a medium bowl, mix together the melted butter, milk, 1 cup sugar, salt, baking powder, flour, vanilla, and almond extracts. Pour over the lemon pie filling, spreading carefully (it might be sticky, so do the best you can - it doesn’t have to be perfect as the crust will puff up as it bakes:)
In the same bowl, add the remaining ½ cup of sugar and 2 Tbsp cornstarch. Mix together with a fork and sprinkle on top of the cobbler mixture.
Over the entire cobbler, gently pour 2 cups of boiling water.
Bake for 1 hour. Serve warm with vanilla ice cream. Garnish with a tiny mint sprig.