If you can eat like normal folks, these are great to take along for a hike...and are probably better for you than most commercial "energy bars".
1 stick butter
1/2 cup natural (100% peanuts) peanut butter
1/4 cup dry milk powder
1/2 cup cocoa powder
3 cups rolled oats
Heat honey and melt butter in saucepan on medium heat. When mixture comes to a gentle boil, remove from heat, add peanut butter and stir well until thoroughly incorporated. Add remaining (dry) ingredients and mix well.
Using a tablespoon, shape into balls and drop onto wax paper. Cool. These get a little sticky, so it is best to store them in the refrigerator.