""This is a family favorite. A creamy, cheesy Alfredo dish, great with a salad and garlic bread."..."
INGREDIENTS
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6 skinless, boneless chicken breast halves - cut into cubes
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6 tablespoons butter, divided
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4 cloves garlic, minced, divided
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1 tablespoon Italian seasoning
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1 pound fettuccini pasta
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1 onion, diced
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1 (8 ounce) package sliced mushrooms
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1/3 cup all-purpose flour
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1 tablespoon salt
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3/4 teaspoon ground white pepper
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3 cups milk
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1 cup half-and-half
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3/4 cup grated Parmesan cheese
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8 ounces shredded Colby-Monterey Jack cheese
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3 roma (plum) tomatoes, diced
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1/2 cup sour cream