1/2 stick butter, plus some to grease the baking dish
1 cup chopped onion
4 tsp. minced garlic
1 Tbls. canned or chopped fresh jalapeno (optional)
1 1/2 tsp. ground coriander
1 1/2 tsp. ground cumin
1/4 cup flour
4 cups milk
1 1/2 tsp. salt
1/2 cup thick and chunky salsa (I use medium)
3 cups dry small shell pasta
2 cups shredded pepper jack cheese
1 1/2 cups shredded white cheddar cheese
1 cup finely crushed tortilla chips
1/2 cup freshly grated parmesan cheese
Recipe
Melt butter in a large, heavy bottomed saucepan over medium heat. Add onion, garlic, jalapeno, coriander and cumin. Cook, stirring, about 1 minute. Stir in flour; cook, stirring constantly, for 1 minute. Add milk while stirring vigorously with a whisk. Whisk well to blend. Bring to a simmer and cook, whisking occasionally, until sauce is thickened, 3 to 4 minutes. Remove from heat. Stir in salt and salsa; set aside.
Meanwhile cook pasta shells according to package directions. Drain well.
Mix together pasta and sauce in a large bowl. Fold in pepper jack and white cheddar cheeses until well combined. Transfer mixture to a lightly greased 13 x 9 inch baking dish.
Mix tortilla chips and parmesan cheese in a small bowl and sprinkle evenly over the top.
Bake in a preheated 375 degree oven until the pasta is heated through, the sides are bubbling slightly and the top is golden brown, about 20 to 30 minutes.