Creamy Crab Chowder

Name: Creamy Crab Chowder
Ingredients: 2 tablespoons salted butter; 8 ounces cremini mushrooms (thinly sliced); 3 cloves garlic (minced); 1 whole red bell pepper (seeded and diced small); 1 whole onion (diced small); 1 whole tomato (diced small); 1 tablespoon tomato paste; 1 pound lump crab meat; 2 tablespoons white wine; 1 teaspoon old bay seasoning; 1/2 teaspoon dried parsley; 1 pinch salt; 2 pinches saffron; 1 pinch crushed red pepper; 1 quart chicken stock; 1/2 cup heavy cream; garlic croutons (for garnish)