STORAGE: Assembled dry oat bags keep at room temperature for up to 4 weeks — all ingredients are shelf-stable. Cooked leftover oatmeal should be consumed within 24 hours at camp (store in a sealed container in a cooler). HIGH ALTITUDE TIP: Above 7,000 feet, water boils at a lower temperature. Add 1 to 2 minutes of cooking time and a splash more liquid for proper texture. VARIATIONS: Tropical — swap cranberries for dried mango and add 2 tbsp toasted coconut flakes. Indulgent — use dried cherries, dark chocolate chips, and a pinch of espresso powder. Protein-boosted — mix one scoop of vanilla protein powder into the dry bag before the trip. NUT-FREE: Replace nuts with pumpkin seeds or sunflower seeds for equal crunch and healthy fats without tree nuts. VEGAN: Use coconut sugar or maple syrup instead of brown sugar and powdered coconut milk instead of powdered dairy milk.