Begin by washing your Roma tomato, mini cucumber, and roasted red pepper under cool water to ensure freshness. Using a sharp knife, thinly slice the tomato and cucumber to about 1/4 inch thickness, and slice the red onion into rings.

Lay out two slices of whole wheat bread on a clean, flat surface or cutting board. Spread a generous layer of hummus onto one slice, ensuring it reaches the edges.

Start building your sandwich with the sliced red onion, followed by the roasted red pepper, cucumber slices, tomato slices, and finally a handful of fresh arugula.

Place the second slice of bread atop the assembled vegetables and gently press down to secure all the layers together.

Slice the sandwich diagonally in half and serve immediately, ideally with a side of sweet potato fries or a refreshing salad.