Cold Italian Sub Sandwich Party Sliders are the thing to make for picnics, the beach, poolside, tailgating…and, well…parties! They are quick and easy to assemble and always a crowd favorite! Bake your own homemade focaccia or use slider, Hawaiian, or dinner rolls for easy assembly. These have that undeniable Italian sub flavor — the salty bite of Italian deli meat, the briny spice of banana peppers, and the fresh crunch of dressed veggies.