Pour 3/4 cup of sugar into a small saucepan. Place over medium heat and carefully move the pan frequently, without stirring, until it takes on a deep amber hue. Pour into the bottom of an 8 inch cake pan coated with cooking spray. Set aside to cool.
Add the remaining 1/2 cup of sugar, almond milk, egg yolks, eggs, vanilla and salt to a blender and mix on lowest setting until blended.
Carefully pour the custard into the prepared pan and cover tightly with aluminum foil. Place the prepared mold in a larger rectangular pan. Pour enough hot water into the pan so that it comes halfway up the sides of the cake pan. Place the pan in the oven and bake for 60 to 75 minutes until a knife inserted into the center comes out clean - flan may still jiggle a little which is fine.
Allow to cool completely inside the water bath then refrigerate covered at least 4 hours or overnight.
To unmold the flan, run a thin knife along the side of pan. Gently shake to loosen. Invert a large plate over the flan and quickly invert the mold in one motion. Top with chopped almonds and raspberries. Garnish with mint if desired. Cut into wedges and serve.
Notes
Make Ahead: The flan can be made 2 days before you plan to serve it.