Gluten-Free Foil-Wrapped Oven Corn
Sweet corn ears steamed in foil packets with melted butter, cheddar cheese, and red pepper flakes. The kernels stay tender and juicy while the toppings infuse every bite. Perfect for summer cookouts, casual family dinners, or camping trips. This method works equally well in an oven, on a barbecue grill, or over an open fire, making it incredibly versatile. The foil packets trap steam for foolproof results and easy cleanup.
Ingredients
- 4 corn ears, peaches and cream type preferred, off the cob
- vegetable oil spray, for foil
- ½ cup butter, cut into 4 equal pieces
- ½ teaspoon seasoning salt, divided among ears
- ½ teaspoon red pepper flakes, divided among ears
- 1 cup shredded cheddar cheese, or cheese of choice, dividedgruyere or monterey jack1:1sharp flavorsdairy-free
note: monterey jack melts more smoothly
Full guide →
Instructions
- 1
Preheat oven to 400F. Lay out four pieces of aluminum foil large enough to wrap corn securely.
- 2
Spray the center area of each foil piece lightly with vegetable oil spray.
- 3
Place one corn cob on each piece of foil.
- 4
Top each cob with one-quarter of the butter.
- 5
Sprinkle each cob evenly with seasoning salt, red pepper flakes, and shredded cheddar cheese.
- 6
Wrap each cob in foil, leaving space for steam expansion.
- 7
Place packets on center oven rack and roast until corn is tender and toppings are melted, about 40 minutes.
- 8
Serve in foil packets.
Tips
For grilling or open fire cooking, place foil packets on grates or over coals for the same cooking time. Rotate occasionally to ensure even heat.
Leave adequate space inside the foil for steam circulation. Overly tight wrapping may prevent even cooking and prevent kernels from steaming properly.
Fresh corn kernels benefit from higher butter content; frozen corn may need less cooking time, around 30-35 minutes.
Good to Know
Refrigerate cooked corn in foil packets up to 3 days. Reheat in 325F oven for 10-12 minutes.
Assemble foil packets several hours ahead. Refrigerate until ready to cook. Cook time remains the same.
Serve immediately in foil packets at the table for interactive dining. Works well at picnics, potlucks, or casual summer meals.
Common Mistakes
Wrap foil too tightly to avoid trapping insufficient steam, which prevents even cooking and kernel tenderness.
Use moderate heat and sufficient cooking time to avoid partially cooked kernels with hard centers.
Add toppings before wrapping to avoid heat loss from uncovering packets mid-cooking.
Substitutions
note: monterey jack melts more smoothly
Full guide →FAQ
Can I cook these on a barbecue grill?
Yes. Place foil packets directly on preheated grill grates over medium-high heat. Cook for 35-45 minutes, rotating every 10-15 minutes for even heat distribution. The timing may vary slightly depending on grill temperature.
What if my corn is frozen instead of fresh?
Frozen corn will cook faster, typically 30-35 minutes in a 400F oven. Reduce cooking time by 5-10 minutes and check for tenderness earlier to avoid overcooking and mushiness.
How long can I keep leftover cooked corn?
Store in sealed foil packets in the refrigerator for up to 3 days. Reheat gently in a 325F oven for 10-12 minutes. Do not freeze butter-cheese corn as the cheese becomes grainy upon thawing.