Radishes Au Gratin

I heard that baked radishes taste a lot like potatoes, so I thought...why not make radishes au gratin?! I couldn't find any recipe online, so I made one up based on a potatoes au gratin recipe. I also tried to make it less calories, omitting the milk and using a minimal amount of butter and cheese.

Radishes Au Gratin
(serves 2-3 people as a side dish)

About 15-20 fresh radishes, sliced thinly
1 yellow or white onion, sliced into thin rings
2 tablespoons butter
2 tablespoons all-purpose flour
1/2 teaspoon salt
2 slices of cheese - I used Muenster
salt and pepper to taste

Preheat oven to 400 degrees. Cover the bottom of a round glass baking dish with the sliced radishes (you can overlap and make layers). Arrange a layer of onion on top. Melt the butter, and using a spoon, drizzle it over the top of the dish. Then sprinkle the flour over the dish. Season the dish with salt and pepper. Be aware that radishes are basically flavorless...I would suggest at least 1/2 tsp of salt. Next tear the cheese into smaller pieces and place it on top of the onion layer. Cover with aluminum foil and bake for about 50 minutes.

THIS IS SO DELICIOUS. I've made it twice so far. :)