Melt the butter in a large pot over medium heat and sauté the onion, red pepper and broccoli for a couple of minutes. Cover and steam for about 5 minutes, stirring occasionally, until onion is translucent and broccoli is tender.
2. Step
Sprinkle the flour over the vegetables and stir for one minute, until there are no dry spots of flour left. Gradually stir in the evaporated milk and cook, stirring frequently, until mixture thickens and comes to a boil.
3. Step
Add the remaining ingredients. Heat for 5 to 10 minutes until heated through and the cheese is melted.
