Philly Beef N Pepper Strata

This is a recipe i found in taste of home magazine. i haven't tried it yet but it sounds awesome!!

Place a third of the bread cubes in a greased 13 x 9 inches baking dish.

Layer with a third of the pepper / onion blend , roast beef , and cheese.

Repeat layers twice.

In a large bowl , whisk the eggs , milk , mustard , salt and pepper , pour over the top.

Cover and refrigerate for 8 hours or overnight.

Remove from refrigerator 30 minutes before baking.

Bake , covered at 325 for 1 hour.

Uncover and bake 15-20 minutes longer or until a knife inserted in the middle comes out clean.

Let stand for 10 minutes before serving.

italian bread, frozen peppers and onions, cooked beef, monterey jack cheese, eggs, milk, dijon mustard, pepper, salt