Using a sharp chef's knife on a cutting board, slice the red onion into rings. About 1/4" thick. Need just 4 per sandwich.
Cut the cucumber into quarters. Remove seeds from the watery middle section.Cut the 4 sticks in half lengthwise.Finish by slicing all 8 sticks into pieces. Need about 2 tablespoons worth per sandwich.
Roughly chop about 3 Peppadew Peppers. Need about 1 tablespoon worth per sandwich.
Trim 1-2 leaves of green leaf lettuce, leaving just the green part of the leaf. Then cut the lettuce into 4 pieces, careful to leave the ruffle on the each of each one. Need enough lettuce to cover one slice of bread per sandwich.
Use a serrated knife to slice tomatoes about 1/4" each. Need 4 slices per sandwich.
Assembling the Panera Mediterranean Veggie Sandwich
Spread a thin layer of hummus on each slice of bread.
Add a layer of green leaf lettuce to one slice of bread.
Sprinkle crumbled feta on top of the remaining hummus slice.
Add chopped peppadew peppers over the feta.
Lay the cucumber slices over the peppers and feta.
Add 4 onion rings on top of the cucumber. Panera places 2 on each half so that when it is cut, the rings stay in tact.
Add 4 tomatoes on top of the rings. Again, 2 tomatoes on each half.