01 -
Heat your oven to 350°F (175°C). Put parchment paper in a 9×13 inch baking dish or just spray it with cooking spray.
02 -
Mix butter with white and brown sugars in a big bowl until fluffy. Add the baking soda, salt, flour and oats, stirring until everything's mixed well. Push half this mixture into the bottom of your pan and pop it in the oven for 13 minutes.
03 -
While your base gets toasty, whip the cream cheese in a large bowl till it's smooth. Slowly mix in the condensed milk until it's all combined. Stir in vanilla and egg yolk until the mixture looks silky.
04 -
Pour your cream cheese mix over the hot base and spread it around evenly. Scatter blueberries all over the cream cheese. Crumble the leftover oat mixture on top and lightly press it down.
05 -
Stick it back in the oven for about 20-25 minutes until you see the edges turning a nice golden color.
06 -
Let it cool all the way down before you cut it into squares. Keep them in the fridge when you're done.