Heat olive oil in a large skillet or saucepan. Pour the onion, garlic and bacon into the pan, cook over high heat, stirring for about 5 minutes, until the bacon is brown and the onions are soft.
Then put the beans in a skillet (saucepan), sprinkle with paprika and cook for about 1 minute.
Drizzle the sherry over the contents of the pan, reduce the heat, cover the pan and simmer for about 5-10 minutes, until the beans are soft.
Season the sauté with salt and pepper to taste. Serve hot.