If you’re looking for an easy, crowd-pleasing side dish that practically makes itself, this Green Chile and Sour Cream Rice Casserole is it. Creamy, cheesy, and packed with colorful peppers and sweet corn, this slow cooker rice dish is perfect for potlucks, taco nights, backyard barbecues, or holiday gatherings.
Everything comes together in the crockpot, making it a low-effort recipe with big flavor. Serve it alongside grilled chicken, steak, or your favorite Mexican-inspired dishes.
Why You’ll Love This Recipe
- Hands-off cooking thanks to the slow cooker
- Creamy, cheesy, and comforting
- Great for feeding a crowd
- Perfect make-ahead side dish
- Mild heat that everyone can enjoy (easy to spice up!)
Ingredients
- ½ cup (1 stick) unsalted butter
- 1 medium onion, finely chopped
- 1 Anaheim chile, seeded and finely chopped
- 1 medium red bell pepper, seeded and finely chopped
- 1 medium yellow or orange bell pepper, seeded and finely chopped
- 2 cups corn kernels (fresh, frozen, or thawed)
- 1 teaspoon ground cumin
- ½ teaspoon ancho chile powder
- 1 cup milk
- 3 cups sour cream
- 4 cups cooked white rice
- 1½ cups finely shredded mild Cheddar cheese
- 1 cup finely shredded Monterey Jack cheese
Instructions
- Prepare the Crockpot
Lightly coat the insert of a 5–7 quart slow cooker with nonstick cooking spray or line it with a slow cooker liner. - Sauté the Vegetables
In a large skillet over medium-high heat, melt the butter. Add the onion, Anaheim chile, bell peppers, corn, cumin, and ancho chile powder.
Sauté for 5–7 minutes, until the vegetables are softened and fragrant. - Cool & Mix
Remove the skillet from heat and allow the vegetable mixture to cool slightly. Transfer it to a large mixing bowl. - Make It Creamy
Stir in the milk, sour cream, cooked rice, Cheddar cheese, and ½ cup of the Monterey Jack cheese until well combined. - Slow Cook
Transfer the mixture to the prepared crockpot. Sprinkle the remaining Monterey Jack cheese evenly over the top.
Cover and cook on LOW for 4–5 hours, until the casserole is heated through and bubbling. - Finish Cooking
Remove the lid and cook for an additional 30 minutes to let the top set slightly. - Serve Warm
Keep the slow cooker on the warm setting until ready to serve.
Serving Suggestions
This creamy rice casserole pairs perfectly with:
- Grilled chicken or steak
- Taco night spreads
- Enchiladas or fajitas
- Barbecue ribs or pulled pork
It also makes a great vegetarian main dish when served with a fresh salad.
Tips & Variations
- Spice it up: Add diced jalapeño or a pinch of cayenne.
- Make it heartier: Stir in cooked shredded chicken or ground beef.
- Swap the rice: Long-grain white rice works best, but jasmine rice is great too.
- Prep ahead: Assemble everything the night before and refrigerate until ready to cook.
Easy Slow Cooker Green Chile Rice Casserole
- Total Time: 5 hours 15 minutes
- Yield: 6–8 SERVINGS 1x
Description
This creamy slow cooker green chile rice casserole is an easy, cheesy side dish made with sour cream, peppers, and corn. Perfect for potlucks, taco night, holidays, and busy family dinners.
Ingredients
-
½ cup (1 stick) unsalted butter
-
1 medium onion, finely chopped
-
1 Anaheim chile, seeded and finely chopped
-
1 medium red bell pepper, seeded and finely chopped
-
1 medium yellow or orange bell pepper, seeded and finely chopped
-
2 cups corn kernels (fresh, frozen, or thawed)
-
1 teaspoon ground cumin
-
½ teaspoon ancho chile powder
-
1 cup milk
-
3 cups sour cream
-
4 cups cooked white rice
-
1½ cups finely shredded mild Cheddar cheese
-
1 cup finely shredded Monterey Jack cheese
Instructions
-
Lightly coat a 5–7 quart slow cooker with nonstick spray or use a slow cooker liner.
-
In a large skillet over medium-high heat, melt the butter.
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Add the onion, Anaheim chile, bell peppers, corn, cumin, and ancho chile powder.
-
Sauté for 5–7 minutes, until the vegetables are softened.
-
Remove from heat and allow the mixture to cool slightly.
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Transfer vegetables to a large bowl and stir in milk, sour cream, cooked rice, Cheddar cheese, and ½ cup of the Monterey Jack cheese.
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Spoon the mixture into the prepared slow cooker and sprinkle with remaining Monterey Jack cheese.
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Cover and cook on LOW for 4–5 hours, until hot and bubbling.
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Remove the lid and cook an additional 30 minutes to set the top slightly.
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Serve warm and keep on the warm setting until ready to serve.
Notes
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This dish is mild; add diced jalapeños for extra heat.
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Use freshly shredded cheese for the creamiest texture.
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Great for making ahead—reheats beautifully.
- Prep Time: 15 MINUTES
- Cook Time: 5 HOURS
- Category: SIDE DISH
- Method: SLOW COOKER
- Cuisine: MEXICAN INSPIRED
Storage & Reheating
- Refrigerate: Store leftovers in an airtight container for up to 4 days.
- Reheat: Warm gently in the microwave or slow cooker with a splash of milk to loosen the texture.
Final Thoughts
This Crockpot Green Chile & Sour Cream Rice Casserole is one of those dependable recipes you’ll come back to again and again. It’s creamy, comforting, and incredibly easy—perfect for busy days when you still want something homemade and delicious on the table.
