Step 1 - In a pot of boiling water, cook the potatoes and carrots until soft. Filter and pass through a mashing press. Add butter and a little milk* or potato cooking liquid. Set aside.
Step 2 - In a frying pan fry the onion with a little oil. Add chili color, oregano and cumin. Mix well.
Step 3 - Add the sofrito to the puree and mix.
Step 4 - Preheat the oven to 180ºC.
Step 5 - Pour the puree into individual bowls and distribute the cheese cubes over the bowls.
Step 6 - Bake until heated through and lightly browned. Serve immediately.