Zucchini Gratin

I probably repost this every summer, but it’s a terrific way to use an abundance of zucchini.

6 Tbsp. butter
2 onions, chopped
6 zucchini, sliced into circles
2 Tbsp. flour
1 cup milk

Salt and pepper

1 1/2 cup fresh breadcrumbs
1 Tbsp. butter, cut into small pieces

1. Melt butter in a large skillet; add onions and zucchini, and cook over low heat for 20 minutes. Stir in flour, and cook 1 minute. Gradually add in hot milk, stirring constantly, until mixture thickens. Season with salt and pepper to taste. Pour mixture into a 13- x 9-inch pan lightly coated with cooking spray. Sprinkle breadcrumbs over zucchini mixture; dot butter pieces along top.
2. Bake at 400° for 20 minutes.