In a mixer bowl, place 150 g of room temperature butter together with 200 g of light brown sugar and 150 g of granulated sugar.
Turn on the mixer and beat the butter mixture until nice and fluffy.
Next, add 70 g of canola oil little by little. After that, add the room temperature eggs one by one, always waiting until the batter has absorbed the previous one.
At this point, turn the mixer to low speed and start to slowly incorporate the dry and wet ingredients (alternating between them) into the batter.
Once you're done, transfer half of the batter to 9x13 inches greased and lined baking tray. Sprinkle the coffee mixture on top and add the rest of the batter. Add the streusel, 100 g of crumbled halva on top, and bake at 350°x 45 minutes or until the center of the cake reaches the temperature of 210°.
Let cool for a couple of hours, then slice it into twelve 3x3 inches square.
Enjoy with your favorite cup of coffee.