In a blender, combine the sugar, almond extract, lemon zest, eggs, flour, milk, and salt and blend until smooth.
In a large oven-safe skillet (I used a 9 inch cast iron) over medium heat, melt the butter. Once melted, add in the blueberries and strawberries and saute until softened lightly, about 3 minutes.
Pour in the batter and immediately transfer it to the oven. Bake for 20-25 minutes until it's puffed up around the edges and browned all over.