Yield & times
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Servings: 6
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Prep time: 15 minutes
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Bake time: 20–25 minutes
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Total time: ~35–40 minutes
Equipment (tools)
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Medium pot for boiling pasta
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Colander (to drain pasta and Rotel)
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Large mixing bowl or large skillet for combining ingredients
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9×13-inch (or similar) casserole dish — greased
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Wooden spoon or silicone spatula
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Measuring cups and spoons
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Cheese grater (if shredding cheese fresh)
Ingredients
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8 oz spaghetti, cooked and drained (about 226.8 g cooked)
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2 cups cooked shredded chicken (≈280 g)
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1 can (10 oz) Rotel (diced tomatoes with green chilies), drained (≈283 g)
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1 can (10.5 oz) cream of chicken soup (≈298 g)
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½ cup sour cream (≈120 g)
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1½ cups shredded cheddar cheese (≈170 g), divided
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½ teaspoon garlic powder
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½ teaspoon onion powder
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Salt & pepper, to taste
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Chopped parsley (optional, for garnish)
Step-by-step instructions
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Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish.
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Cook spaghetti: Boil salted water and cook spaghetti until al dente (slightly firm). Drain well and return to pot. If you like, reserve 2–3 tablespoons pasta water.
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Mix the sauce: In a large bowl or skillet, combine the drained Rotel, cream of chicken soup, sour cream, garlic powder, onion powder, and 1 cup of the shredded cheddar. Stir until smooth. Season with salt and pepper (start light — you can add more after baking).
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Combine with chicken & pasta: Fold in the cooked shredded chicken and the drained spaghetti gently but thoroughly. If mixture seems too thick, add a splash of reserved pasta water to loosen.
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Transfer to casserole dish: Spread mixture evenly into the prepared dish. Sprinkle the remaining ½ cup of cheddar evenly over the top.
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Bake: Cover loosely with foil and bake 15 minutes. Remove foil and bake an additional 5–10 minutes until cheese is melted and casserole is bubbly. If you like a browned top, broil 1–2 minutes while watching carefully.
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Rest & serve: Let sit 5–10 minutes before serving so it firms up and slices cleanly. Garnish with chopped parsley if desired.
Tips for guaranteed success
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Don’t overcook the spaghetti. Al dente pasta holds up better in a casserole and prevents mush.
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Drain Rotel well. Excess liquid can make the casserole watery. If you accidentally add too much liquid, stir in a tablespoon of flour or extra cheese to thicken before baking.
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Use freshly shredded cheese. It melts better and gives a creamier texture than pre-shredded blends that contain anti-caking agents.
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Let it rest. A short rest after baking helps the casserole set so portions hold together.
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Taste as you go. Rotel and canned soup may add salt — season carefully.
Variations & additions
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Make it spicy: Use Rotel original (if you didn’t already), stir in chopped jalapeño, or add ¼–½ teaspoon cayenne.
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Creamier version: Stir in 4 oz cream cheese or 1 cup Velveeta for ultra-silky texture.
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Veggie boost: Add 1 cup frozen corn, diced bell pepper, or a cup of drained black beans. Sauté bell pepper first for best flavor.
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Different cheese: Pepper Jack, Monterey Jack, or a sharp Colby cheddar work wonderfully.
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Low-fat swap: Use low-fat sour cream and reduced-fat cheddar; consider homemade cream-thickener in place of canned soup.
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Make vegetarian: Replace chicken with 2 cups cooked chickpeas or shredded jackfruit and use vegetarian cream soup.
Storage & reheating
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Refrigerator: Cool completely, cover tightly, and store up to 3–4 days.
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Freezer: Portion into airtight containers or freeze the whole casserole (covered) for up to 2 months. Thaw overnight in the fridge before reheating.
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Reheating — oven (best): 350°F (175°C) until warmed through, about 15–20 minutes for a portion, 25–35 for a whole casserole (cover to prevent over-browning).
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Reheating — microwave: Heat individual servings 1–2 minutes (stir halfway) until hot. Add a splash of milk or a pat of butter if it seems dry.
Approximate nutrition (per serving)
Yield used for estimates: 6 servings. These are approximate values based on common ingredient nutrition data.
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Calories: ~360 kcal per serving
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Protein: ~26 g
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Carbohydrates: ~20 g
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Fat: ~20 g
(Nutrition is an estimate — exact values depend on the brands and specific ingredients you use.)
Frequently Asked Questions (FAQs)
Q — Can I use raw chicken instead of cooked shredded chicken?
A — Yes. If using raw chicken, dice or use boneless breasts, sauté or poach until fully cooked (internal temp 165°F / 74°C), shred, then mix into the casserole. You may need to extend baking slightly.
Q — Can I make this ahead of time?
A — Absolutely. Assemble, cover, and refrigerate for up to 24 hours. Bake when ready — you may need to add a few extra minutes if it’s straight from the fridge.
Q — Is Rotel necessary? What’s a substitute?
A — Rotel gives a distinctive tomato + green chili kick. Substitute with a drained 14 oz can of diced tomatoes + 2 tablespoons canned chopped green chilies, or use diced tomatoes and add a chopped fresh poblano/jalapeño.
Q — How do I prevent the casserole from becoming watery?
A — Drain Rotel well, avoid overcooking pasta, and don’t add excess liquid. Use the short rest period after baking to let moisture redistribute and be absorbed.
Q — Can I use a different pasta shape?
A — Yes. Penne, rotini, or elbow macaroni all work — adjust cook times for al dente accordingly.
This version of Creamy Rotel Chicken Spaghetti Casserole is built to be forgiving, adaptable, and satisfying. If you want, I can also:
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convert this into a printable recipe card,
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scale it to feed 4 or 10, or
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make a lower-carb or dairy-free version — tell me which and I’ll write it out.
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