Start by washing the bell pepper and cutting off the stem. Slice it in half lengthwise and carefully remove the seeds and inner ribs. This creates a perfect base for your fillings while keeping the pepper halves intact.
Place the pepper halves cut-side up. Spread cream cheese over the surface, then drizzle a small amount of whole-grain mustard on top. This forms a creamy, tangy layer that complements the crisp pepper.
Add the ham, Swiss cheese, cucumber slices, and avocado or guacamole on each pepper half. Make sure the layers are evenly distributed so every bite has a balance of flavors.
Carefully bring the two pepper halves together, creating a compact sandwich. Press lightly to keep the fillings in place, and it’s ready to serve immediately.