Smoked Macaroni & Cheese

INGREDIENTS

• 4 Tbs. (1/2 stick) unsalted butter
• 1/4 cup all-purpose flour
• 3 1/2 cups milk
• 1 Tbs. tomato paste
• 2 cups shredded sharp cheddar cheese
• 2 cups shredded smoked Gouda cheese
• Salt and freshly ground black pepper, to taste
• Pinch of cayenne pepper
• 4 oz. crustless country-style bread
• 2 Tbs. unsalted butter, melted
• 1 lb. rigatoni, cooked until al dente and drained