01 -
Flip the oven on to 175°C. Spray a 33 x 23 x 5 cm pan with nonstick stuff. If you want, line it with foil, then spray that too so cleanup is simple.
02 -
Dump cinnamon, sugar, and graham cracker crumbs in a mixing bowl. Pour melted butter over the crumbs and stir till it all looks damp. Pack this into the bottom of your prepared pan, squishing it down even. Pop it in the oven for about 10 minutes, or till the edges brown up a bit. Let it relax on a rack till totally cool.
03 -
Grab a big bowl and beat the cream cheese and sugar smooth—use a food processor or a mixer. Blend in that dulce de leche so it all turns the same color. Crack in the eggs one at a time, stirring lightly as you go. Splash in vanilla at the end and mix just enough to combine.
04 -
Spread your filling evenly over the cooled crust, push it into the corners. Bake at 175°C till it sets at the edge and only wiggles a little in the center, about 38 minutes. Pull it out and let it cool all the way on a rack.
05 -
In a bowl safe for the microwave, stir 180 grams dulce de leche with 45 ml cream. Heat for 10 seconds at a time, mixing after every zap, till it turns silky. If you want it runnier, add cream little by little.
06 -
Pour that warm topping all over the cheesecake layer, get it to the edges with a spatula. Stick the whole thing in the fridge for at least an hour so the topping firms up and everything gets cold.
07 -
Slice chilled bars into 24 with a super sharp knife, wiping it off after each cut so edges stay neat. Dust with a pinch of fleur de sel right before you put them out to eat.