Slice yellow squash, zucchini, and onion very thin. Do not peel squash and zucchini.

Heat olive oil and Sautee onion until translucent. Add butter and white wine.

In medium bowl combine zucchini, yellow squash, garlic, Italian seasoning, salt, and pepper. Toss well.

Add mixture to sautéed onions.

Cook for about 10 minutes or until tender and crisp.

Serve immediately (if it sits to long it will become mushy).

Preheat oven 450 degrees.

Lightly Spray 13x9x2-inch glass pan with cooking spray.

Slice onion thinly and quarter zucchini and yellow squash.

in a medium bowl or a large zip lock bag, toss together all ingredients, coating well.

Arrange squash mixture evenly in pan and bake 30 minutes or until vegetables are tender, stirring every 15 minutes.