Easy Vegan Mexican Rice Casserole (Budget-Friendly!)

Whole Grains, Rice, and Pasta

March 15, 2026

Smiling woman holding a hot casserole dish filled with Vegetarian Baked Mexican Rice Casserole topped with vegan cheese and sliced olives.

Craving ultimate comfort food that won’t break the bank? My Vegetarian Baked Mexican Rice Casserole is your answer! Imagine pulling a warm, bubbly, and cheesy dish from the oven after a long day. This recipe is a weeknight hero in my home—it’s incredibly satisfying, costs less than a dollar per serving, and cleanup is a breeze. Packed with protein-rich black beans, sweet corn, and savory spices, it’s the perfect cozy meal that just happens to be 100% plant-based.

Ingredients

• 1 can 15 oz / 425g black beans, drained and rinsed
• 0.75 cup 6.5 oz / 185g salsa (mild, medium, or hot)
• 2 tsp 5g chili powder
• 1 tsp 2g ground cumin
• 0.5 cup 2.6 oz / 75g corn kernels (fresh, frozen, or canned)
• 2 cups 11 oz / 320g cooked long-grain rice (white or brown)
• 0.5 cup 2 oz / 56g grated vegan cheese (cheddar or Mexican blend)
• 0.33 cup 1.6 oz / 45g sliced black olives

Instructions

1. Preheat your oven to 350°F (175°C) and set a rack in the center position.
2. In a large pot or Dutch oven, combine the black beans, salsa, chili powder, and cumin over low heat.
3. Cook for 3-5 minutes until warm, then use a fork or potato masher to partially mash the beans for a creamy texture.
4. Remove the pot from the heat and stir in the corn kernels and cooked rice until well combined.
5. Transfer the mixture to a medium casserole dish (approx. 8×8 inch) and spread evenly.
6. Sprinkle the grated vegan cheese and sliced black olives over the top.
7. Bake for 15-20 minutes, or until the cheese is melted and the casserole is bubbly around the edges. Serve warm.

Nutritional Information

• Estimates per serving
• Calories: 248 kcal
• Carbohydrates: 50g
• Protein: 9g
• Fat: 1g
• Fiber: 7g
• Sugar: 4g
• Sodium: 616mg

Pro Tips

• Use Day-Old Rice: For the best texture, use cold, leftover rice. Freshly cooked rice can become mushy when baked.
• Bloom Your Spices: Toast the chili powder and cumin in the dry pot for 30 seconds before adding other to deepen their flavor.
• Don’t Over-Mash: Partially mash the beans, leaving about half of them whole to create a satisfying, chunky texture.
• Broil for a Golden Top: For a browned, bubbly cheese topping, switch the oven to broil for the last 2-3 minutes of cooking. Watch it closely so it doesn’t burn!

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