Creamy Tomato and Cheddar Baked Grits Casserole
Tomato Grits with Rustlin' Rob's Southern Yellow Grits is a savory, comforting casserole that combines creamy stone-ground grits with melted cheddar and Velveeta cheese, diced tomatoes with green chilies, and sautéed green onions. This dish delivers rich, cheesy depth balanced by bright tomato acidity and the subtle heat from Ro-Tel, creating layers of flavor and a luxurious creamy texture. The combination of two cheeses—sharp cheddar and processed Velveeta—ensures silky consistency while building savory complexity. Best suited for potluck dinners, holiday sides, or casual weeknight suppers, it's especially popular in Southern and Southwestern tables. This baked casserole version enhances simple grits into a complete side dish that holds heat beautifully and feeds a crowd, distinguishing it from stovetop preparations by adding structural integrity and a golden cheese-topped finish.
Ingredients
- 2 cup water
- 1 ¼ cup milk
- 1 tsp salt
- 1 cup Rustlin' Rob's Southern Yellow Grits
- ½ cup butterolive oil or bacon fat1:1fatdairy-free
Olive oil removes richness; bacon fat adds smoky depth; removes dairy; confidence 3
Full guide → - 1 tbsp butterolive oil or bacon fat1:1fatdairy-free
Olive oil removes richness; bacon fat adds smoky depth; removes dairy; confidence 3
Full guide → - ⅓ cup green onions, diced
- 4 oz Velveeta cheese, cubedcream cheese0.5:1dairyadds dairy
Adds tanginess and thins mixture slightly; reduces creaminess; use half amount
Full guide → - ¼ tsp garlic powder
- 2 ½ cup cheddar cheese, shreddedGruyere or smoked Gouda1:1dairydairy-free
Adds nuttiness; removes mild cheddar character; confidence 4
Full guide → - 1 10-ounce can diced tomatoes and green chilies (Ro-Tel)2 cups fresh diced tomatoes + 1 tbsp diced canned green chiles1:1vegetable
Removes convenience and shelf-stable appeal; adds fresher flavor profile
Instructions
- 1
Preheat oven to 350 degrees F.
- 2
In a saucepan, bring water and milk to a boil. Add salt and slowly add grits, stirring constantly for 1 minute after returning to a boil.
- 3
Reduce heat, cover, and cook for 3 minutes.
- 4
Add 1/2 cup butter to grits and stir until melted.
- 5
Cover and cook until grits are thick and creamy, about 3 to 5 minutes. Remove from heat.
- 6
In a skillet, sauté green onions in remaining butter for 1 minute.
- 7
Fold sautéed onions, Velveeta, garlic powder, and 1 and 1/2 cups cheddar cheese into grits, stirring until cheese melts. Add tomatoes and mix well.
- 8
Pour grits into greased casserole and bake for 40 minutes.
- 9
Sprinkle remaining 1 cup cheese over top and bake for final 5 minutes until melted.
Tips
Use real stone-ground grits if available for deeper corn flavor and superior texture; processed instant grits yield a gluey result. The slow addition and constant stirring prevents lumps from forming during the initial cooking stage.
Velveeta melts smoothly and ensures creamy consistency, but combining it with sharp cheddar adds complexity without curdling. Add cheeses off-heat for best emulsification and silky mouthfeel.
Prepare the casserole through the cheese-melting step several hours ahead, refrigerate uncovered, then bake cold (add 10-15 minutes to baking time). Top with remaining cheese fresh just before final bake to ensure golden, melted cheese on serving.
Good to Know
Covered, refrigerated, 3-4 days. Reheat covered at 350 degrees F for 20-25 minutes until warmed through.
Prepare through cheese-melting step, cool, cover, refrigerate up to 24 hours. Bake cold, adding 10-15 minutes to bake time. Add final cheese layer fresh before baking.
Serve hot as a side dish alongside barbecued meats, fried chicken, or grilled fish. Portions range 1/2 to 3/4 cup per serving depending on plate composition.
Common Mistakes
Add grits too quickly to boiling liquid to avoid lumps; slow addition with constant stirring is essential.
Stir cheese off heat to avoid curdling; adding while pot is hot can break emulsion.
Don't skip the sautéed green onions; they provide textural contrast and fresh note against richness.
Substitutions
Dairy-Free Swaps
Adds tanginess and thins mixture slightly; reduces creaminess; use half amount
Full guide →Adds nuttiness; removes mild cheddar character; confidence 4
Full guide →Olive oil removes richness; bacon fat adds smoky depth; removes dairy; confidence 3
Full guide →General Alternatives
Removes convenience and shelf-stable appeal; adds fresher flavor profile
FAQ
Can I make this casserole ahead and freeze it?
Yes. Prepare through the cheese step, cool completely, cover tightly with plastic wrap and foil, and freeze up to 2 months. Thaw overnight in refrigerator, then bake cold, adding 15-20 minutes. Do not add final cheese layer until baking from frozen.
What if I don't have Rustlin' Rob's brand grits?
Use any stone-ground polenta or yellow cornmeal at the same ratio (1 cup dry to 3 and 1/4 cups liquid). Avoid instant grits, which create a gluey texture. Bob's Red Mill or local mill stone-ground grits work well as substitutes.
How long does leftover tomato grits casserole keep?
Covered and refrigerated, 3-4 days. Reheat covered at 350 degrees F for 20-25 minutes. Grits thicken considerably when cold; add milk or cream during reheating to restore creaminess if needed.