5️⃣ Assemble the Casserole
Preheat oven to 350°F (175°C).
Transfer the mixture to a greased 9×13-inch baking dish.
Sprinkle cheddar and mozzarella evenly over the top.
6️⃣ Bake
Bake uncovered for 25–30 minutes, or until the cheese is melted, bubbly, and lightly golden on top.
7️⃣ Serve
Remove from oven and let rest for 5 minutes. Garnish with fresh parsley if desired. Serve warm and enjoy!
Helpful Tips
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Rotisserie chicken saves time and adds flavor
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Cook pasta just until al dente so it doesn’t get mushy
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Drain tomatoes well to avoid excess liquid
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Add a splash of milk if sauce thickens too much
Variations & Add-Ins
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Veggie boost: Add peas, mushrooms, or bell peppers
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Extra cheesy: Mix in cream cheese or Monterey Jack
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Spicy version: Add jalapeños or extra cayenne
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Healthy swap: Use whole wheat pasta and light sour cream
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No Rotel? Use diced tomatoes and a pinch of chili powder
Make-Ahead & Storage
Make Ahead:
Assemble the casserole, cover tightly, and refrigerate up to 24 hours before baking.
Freezer Friendly:
Freeze unbaked or baked casserole for up to 3 months.
Reheating:
Reheat in oven at 325°F or microwave individual portions until heated through.
Serving Suggestions
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Garlic bread or dinner rolls
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Simple green salad
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Steamed broccoli or green beans
Final Thoughts
This Classic Chicken Spaghetti is the ultimate comfort casserole—creamy, cheesy, and full of nostalgic flavor. Whether you’re feeding a family or prepping meals for the week, this dish always delivers warmth and satisfaction in every bite.