The easy answer is ANY!  Bell peppers all start out green, then ripen to yellow, orange, and then red, which is the most mature.  If you like your bell peppers slightly sweet, opt for an orange or red bell pepper. If you prefer less sweet choose a green bell pepper - green bell peppers tend to be the cheapest, too.u003cbr/u003eu003cbr/u003eMy personal fave is red bell pepper, followed by green, but the recipe works perfectly with all bell peppers.u003cbr/u003eu003cbr/u003eHere are some tips for how to pick out the best bell peppers for stuffed peppers:u003cbr/u003eu003cbr/u003e- Look for evenly sized bell peppers so they all bake evenlyu003cbr/u003e- One medium-large stuffed bell pepper will be a full serving for one adult, so plan accordinglyu003cbr/u003e- Avoid bell peppers that are wrinkled or have soft spots. Instead, opt for firm, crisp bell peppers that feel heavy for their sizeu003cbr/u003e- Choose round, stocky-looking bell peppers so look like they'll hold a good amount of stuffing