Pantry Dinner with Sardines

Name: Pantry Dinner with Sardines
Ingredients: 2-4 ounces tinned sardines (I use olive oil packed, but any type is fine); 1 15 oz can of fire-roasted crushed tomatoes; 1/2 diced yellow onion (add more if you like); 2/3 cup golden raisins; 2 cups israeli couscous; 2.5 cups chicken stock, plus more to loosen up sardine mixture; 1 tablespoon garlic powder; 1-2 teaspoons italian seasoning; 1/4 teaspoon chili flakes (add more if you wish); 2 teaspoons minced garlic; salt; pepper; 1 tablespoon olive oil; 1 tablespoon butter