Spicy Black Beans with Tomatoes, Onions, and Cilantro

Ingredients

• tbl butter
  2 unit
• tbl olive oil
  2 unit
• med Onion

  chopped
  1 unit
• cl garlic

  minced or pressed
  2 unit
• Green bell pepper

  seeded, deribbed, and chopped
  1 unit
• Red bell pepper

  seeded, deribbed, and chopped
  1 unit
• black beans

  cooked
  2 cup
• salt
  1/2 tsp
• plum tomatoes

  peeled, seeded, and chopped
  6 unit
• tbl olive oil
  2 unit
• cilantro

  freshly chopped, or parsley
  1/4 cup
• cayenne pepper

  ground
  1/4 tsp
• parsley sprigs

  for garnish
  5 unit