Name of Recipe:  Cebollas rellenas al estilo de Cáceres (Stuffed onions Cáceres style) 
Comments in square brackets are mine and not in the original recipe.
Serves:  4
Ingredients:
4 slices bacon
1 clove garlic
100g minced beef
50g olive oil
1 beaten egg
Salt
Pepper
4 medium onions
Preparation:  
Remove the rind from the bacon slices.
Peel the garlic clove and cut into 4.
Add the bacon and the garlic to the  
 5 seconds / Speed 5½.
After that time, add the mince and the oil to the  
 2 seconds / Speed 4.
Next, 
5 minutes / Temp. Varoma / Speed 3½.
Take all of the ingredients out of the  

, leave to cool, season and mix with the beaten egg.  Reserve.
Peel the onions, empty them [I presume that means remove most of the interior] and fill with the previously prepared mixture.
Put them on a baking tray and bake at 170°C for 30 minutes.
Origin:  Translated from a recipe in 
Cocina española con Thermomix (Susaeta Ediciones).