Frying an egg on the sidewalk is one thing. Given that a typical baking temperature for a full-sized loaf of bread is well in excess of 200 C (I use 240-250 most of the time), and that the hottest you could get that pile of masonry* in a day of full sun in Texas is probably 60 C (maybe 65 if you painted it black), I hereby call 100% shenanigans on that beautiful loaf.
Well played, whoever set up the photo and circulated it.
* According to the Engineering Toolbox, light red brick has an
absorbed solar radiation factor of 0.55, which means that the 1 kW/m2 gets reduced to 550W and then you have the mass of the structure to contend with. A flat black piece of sheet metal can reach 80-90 C in full sun, but will cool off quickly as soon as you shade it.