Pork with polenta

6 tablespoons vegetable oil, divided (plus more if needed) 1 1/2 cups chopped onions 1 cup diced carrot (1/2-inch dice) 2 tablespoons minced serrano peppers 3[...]

1 Tbsp. fruity extra virgin olive oil 1 sm yellow onion , minced 2 lrg garlic cloves, chopped 1 med red sweet pepper , - cored, seeded and 1/2 lb mild Italian[...]