Created by RecipeGirl on August 13, 2012
Step 1: In a fairly large saucepan heat butter. Saute onion and cayenne until onion is soft about 3-4 minutes. Add garlic and stir 2 minutes. Add the flour and chicken bouillion and stir to coat, until flour is bubbly. Add in the milk, whisking constantly, then continue to whisk and heat until mixture bubbles and thickens slightly.
Step 2: Reduce heat and stir in mashed beans, heating and stirring until smooth. Add cheese and stir until melted. Add salt and pepper to taste.
Step 3: Serve sauce on cooked pasta. Sprinkle Parmesan cheese over top