Jalapeno mac and cheese?
Pepper jelly
Freeze 'em.
Or, dry, toast and grind 'em to make jalapeno powder, or to use in a rub. I think you have to oven-dry jalapenos (at a really low temp) b/c they're so plump--probably need to slice 'em in half to dry. (Dried chipotles are smoked jalapenos; can you smoke the peppers? Do you have big enough rolling papers? hahaha. Kidding.)