INGREDIENTS
3
Yellow onions, large
1 lb
Cavatappi pasta
1/4 cup
All-purpose flour
1 tsp
Salt
2 tbsp
Olive oil
2 cups
Croutons
2 1/2 cups
2% milk
2 cups
Asiago cheese
6 tbsp
Butter, unsalted
2 cups
Fontina cheese
3 cups
Gruyere cheese
8 oz
Mascarpone cheese