Switch it up
For an alternative topping, try mashed avocado with poached salmon instead of the feta mix (smoked salmon or other cured fish isn’t a healthy choice because of its salt content).You could also swap the feta for a blue cheese, and top with pear instead of beetroot, and a few walnuts and dried dates or raisins instead of the beans.
Boil the beans following the pack instructions, about 3 mins, then drain and mix with the oil, vinegar, garlic and mint. Meanwhile, toast the bread.
Mix the yogurt with the feta to make a rough paste, then spread half onto the toast. Top with the beetroot slices, then spread on the rest of the feta mix and pile the beans on top. Eat with your fingers or a knife and fork. Take all the different bits for the sandwich to work in small tubs and build it at your desk.