There is a version of a meatball parm sandwich that arrives at your table already defeated — the bread gone soft, the cheese pooled into a corner, the meatball structure lost somewhere between the oven and the plate. Michael Buttacavoli, executive chef at Martin's Italian in Oldsmar, Florida, has spent enough time thinking about this failure mode to have engineered against every one of them.
The meatball is a ratio problem first: Buttacavoli runs a 70/30 pork-to-beef blend, which stays looser and juicier under high heat than the lean-heavy blends that dry and pack. He mixes cold and stops before the fat smears — overmixing is how you get a hockey puck. The bread gets a two-sided toast before assembly, which gives the bottom a structural barrier the sauce cannot penetrate.
Martin's Italian is the kind of neighborhood place that doesn't need to be on a list to matter. Bobby's version, by contrast, could've used a structural review before it went on television.