Cheesy Baked Rice with Vegetables
A comforting one-dish casserole that transforms simple cooked rice into a creamy, cheese-forward side dish with sour cream binding and mustard undertones. Mixed frozen vegetables add color, texture, and nutrition without requiring prep work. This version stands out through its use of smoked paprika for depth and a precise seasoning blend—mustard powder bridges the umami gap while mineral salt and pepper round out flavors. The sour cream creates a luxurious, slightly tangy base that prevents dryness. Best for weeknight dinners, potlucks, or as a vegetable-inclusive accompaniment to roasted meats. Ideal when you need something substantial yet simple, requiring minimal active time. The foil-covered bake ensures even cooking and cheese melting without browning. Perfect for those seeking comfort food that feels homemade but comes together in minutes.
Ingredients
- 2 cup cooked rice
- 1 ½ cup shredded cheddar cheese
- 1 cup sour cream
- ¼ tsp mustard powderdijon mustard0.5tsp for 0.25 tsp powder
tangy,liquid adjustment
- ¼ tsp mineral saltkosher salt1:1salt
neutral substitute
- ⅛ tsp pepper
- ⅛ tsp smoked paprika
- 1 cup frozen mixed vegetablesfresh mixed vegetables1:1vegetables
requires no thawing; add same
Instructions
- 1
Preheat oven to 350F and grease an 8x8 baking dish
- 2
Combine cooked rice, shredded cheddar, sour cream, mustard powder, mineral salt, pepper, and smoked paprika in a large mixing bowl and mix well
- 3
Fold in frozen mixed vegetables gently
- 4
Spread mixture into prepared baking dish and smooth the surface evenly
- 5
Cover with aluminum foil and bake until cheese is melted and bubbly, about 20 minutes
- 6
Serve
Tips
Fold frozen vegetables gently to preserve their structure and prevent them from breaking apart during mixing and baking. This maintains texture contrast against the creamy rice base.
Use truly cooked rice (not raw or par-cooked) to ensure it absorbs seasonings and cream properly without requiring extended baking. Day-old rice works especially well.
Cover tightly with foil to trap steam and melt cheese evenly; remove foil in final 2-3 minutes if you prefer a light golden top, though this recipe prioritizes creaminess over browning.
Good to Know
Cover and refrigerate up to 3 days. Reheat covered in 350F oven for 10-15 minutes until warmed through.
Assemble casserole (without baking) up to 24 hours ahead. Cover and refrigerate, then bake from cold, adding 5-10 minutes to baking time.
Pair with roasted chicken, baked salmon, grilled steak, or as a meatless main with a green salad. Complements herb-roasted vegetables or garlic bread.
Common Mistakes
Skip the gentle folding of vegetables to avoid crushing them and creating mushy pockets in the finished dish
Omit foil covering to avoid uneven cheese melting and dry rice edges
Substitute uncooked rice to avoid undercooked grains and gritty texture throughout
Substitutions
Dairy-Free Swaps
General Alternatives
FAQ
Can I make this casserole ahead of time?
Yes. Assemble the complete casserole without baking, cover, and refrigerate up to 24 hours. Bake from cold, adding 5-10 minutes to the stated time. You can also freeze unbaked casseroles up to 2 months; thaw overnight before baking.
What if I don't have smoked paprika?
Use regular paprika for color and mild pepper flavor, or omit entirely—the casserole remains tasty. Alternatively, add 1/8 tsp cayenne for heat, or substitute 1/4 tsp garlic powder for savory depth without smokiness.
How long does this casserole keep, and can I freeze leftovers?
Refrigerate covered up to 3 days. Freeze in airtight containers up to 2 months. Thaw overnight and reheat covered at 350F for 10-15 minutes. Quality degrades slightly with freezing but remains acceptable for quick weeknight meals.