Heat the olive oil in a large saucepan over medium heat.
Add onions and garlic, cook until soft and golden.
Add the ground beef and cook until fully brown. Transfer meat to a colander. Drain and then return the meat to the saucepan.
Tip in red pepper, beans, sweet corn and chilli con carne spice mix.
Continue to cook for about 5 minutes, stirring occasionally.
Pour in the diced tomatoes together with their juice into a saucepan. Bring to aboil and season to taste.
Reduce heat to low, put a lid on and leave to cook for a further 10 minutes.
Remove from the heat and cool thoroughly.
Spread the trail chilli mixture on dehydrator trays covered with non-stick sheets or parchment paper.
Dehydrate at 63C/145F for 8-10 hours until brittle.
Divide the dried meal into equal portions (about 1 cup each) and pack them into medium-sized zip lock bags.