30-Minute Grilled Vegetable Sandwiches
These vibrant vegetable sandwiches showcase the best of summer produce with tender bell peppers, onions, and squash paired with aromatic homemade basil pesto. Perfect for outdoor gatherings or casual weeknight dinners, they offer a satisfying meat-free option that even carnivores will appreciate. The recipe provides both stovetop and grilling methods, making it adaptable to any cooking situation. Fresh pineapple spears add a tropical touch that complements the Mediterranean flavors beautifully.
Ingredients
- 2 lbs pineapple, fresh, sliced into spears
- 2 Tbsp pine nuts
- 1 clove garlic, peeled
- 1 oz parmesan cheese, grated(optional)
- 1 ½ oz basil, fresh
- 2 tsp lemon juice
- 3 Tbsp olive oil
- 1 onion, medium, sliced
- 2 bell peppers, yellow or orange, sliced into 1 inch wide pieces
- 1 lb summer squash, sliced into roundszucchini1:1preference
same cooking time and texture
- 4 rolls, ciabatta or sandwich stylebaguette1:1preference
slice lengthwise and portion
- ¼ cup pesto
Instructions
- 1
Slice rolls open, or if using baguette, slice lengthwise through center and divide into sandwich portions
- 2
For stovetop method: heat wok or skillet over medium-high heat, add cooking oil, then add peppers, onions, and squash and saute until tender
- 3
For grill method: heat grill and clean grates, brush vegetables with olive oil and sprinkle with salt, arrange on grill using basket or foil if needed, grill uncovered turning as they cook
- 4
If desired, grill pineapple spears on both sides
- 5
Toast bread on stovetop or grill during last minutes of cooking
- 6
Assemble sandwiches by spreading pesto and layering in cooked vegetables
- 7
Serve with pineapple spears on the side
Tips
Use a grill basket or foil to prevent smaller vegetable pieces from falling through grill grates.
Make pesto ahead of time and store covered in refrigerator for up to 3 days.
Choose firm vegetables that won't become mushy when cooked for best texture.
Good to Know
Store assembled sandwiches covered in refrigerator for up to 2 days
Make pesto up to 3 days ahead and grill vegetables day of serving
Serve immediately while vegetables are warm and bread is toasted
Common Mistakes
Don't overcook vegetables to avoid mushy texture
Toast bread just before serving to maintain crispness
Substitutions
Dairy-Free Swaps
Nut-Free Alternatives
General Alternatives
FAQ
Can I make these sandwiches without a grill?
Yes, the stovetop method works perfectly using a wok or large skillet over medium-high heat.
How long will leftover pesto keep?
Homemade pesto stays fresh covered in the refrigerator for up to 3 days.
Can I prepare the vegetables ahead of time?
Cook vegetables day of serving for best texture, but you can prep by slicing them the night before.