Easiest Way to Make Appetizing Summer Vegetable Gratin

Summer Vegetable Gratin.

You can cook Summer Vegetable Gratin using 13 ingredients and 18 steps. Here is how you achieve it.

Ingredients of Summer Vegetable Gratin

1. It's of vegetable.
2. Prepare 3 large of Tomatoes.
3. Prepare 3 of Ears of Sweet Corn.
4. It's 1 cup of Yellow Squash.
5. You need 1 cup of Zucchini.
6. Prepare 1 1/2 cup of Milk (1% or higher fat).
7. You need 1 of Egg.
8. Prepare 1 tbsp of Butter, melted.
9. Prepare 1 cup of Grated Parmesan, divided.
10. It's 1/4 tsp of cornstarch.
11. You need 1 cup of panko bread crumbs.
12. It's 1 of sea salt or kosher salt.
13. It's 1 of black pepper.

Summer Vegetable Gratin step by step

1. Preheat oven to 350..
2. Cut tomatoes into thick slices, aiming for 3 or 4 slices per tomato.
3. Lightly salt each side of tomato and lay on cookie sheet fitted with a wire cooling rack to allow tomatoes to drain..
4. Cut corn off the cob..
5. Place corn, milk, cornstarch and 3/4 cup of parmesan in a saucepan over medium heat. Stir frequently to avoid scalding..
6. Slice squash and zucchini thinly..
7. Spray glass 9x13 dish with cooking spray..
8. Arrange zucchini and squash in the bottom of the dish..
9. Pat tomatoes dry with paper towels..
10. Arrange tomatoes slices over zucchini and squash..
11. Beat egg slightly..
12. Add melted butter to beaten egg and mix..
13. Add butter and egg mixture to corn mixture. Blend well..
14. Pour corn mixture over tomatoes. Spread as evenly as possible..
15. Mix panko with remaining parmesan cheese, adding more cheese if desired. Add pepper to taste. Sprinkle mixture evenly over vegetables..
16. Cover dish with foil, bake at 350 for 40-50 minutes until zucchini and squash are easily pierced with fork..
17. Remove foil and place dish under broiler until bread crumbs and cheese begin to brown, about 3 minutes..
18. .