Easy Refried Beans

Directions

1. 1
   Bring beans to a boil in a saucepan.
2. 2
   Strain liquid and discard.
3. 3
   Put beans in an electric mixer and mash.
4. 4
   Stir in onion, butter and salt.
5. 5
   Return to saucepan and over low heat stir until heated thoroughly.
6. 6
   Stir in grated cheese.