Heat oven to 350ºF. Grease shallow 2-quart casserole with shortening, or spray with cooking spray. Cook and drain pasta as directed on package.
Melt butter in 2-quart saucepan over medium heat. Cook garlic in butter 1 minute, stirring constantly. Stir in flour. Cook, stirring constantly with wire whisk, until smooth and bubbly.
Stir in vermouth. Stir in half-and-half, clam juice, tomato paste, salt and pepper. Cook over medium heat, stirring constantly, until thickened. Stir in shrimp, dill weed and 1/4 cup of the cheese.
Stir pasta into shrimp mixture. Pour into casserole. Sprinkle with remaining 1/2 cup cheese. Bake uncovered 35 to 40 minutes or until light brown and hot.