Easy Layered Vegetable Bake

1 pkg. STOVE TOP Stuffing Mix for Chicken

5 eggs, divided

1-1/2 cups KRAFT Mozza-Cheddar Shredded Cheese, divided

1 medium onion, chopped

1 pkg. (10 oz.) frozen chopped spinach, thawed, drained

3/4 cup red pepper strips

2 medium tomatoes, sliced

PREHEAT oven to 400°F. Prepare stuffing mix as directed on package. Add 1 of the eggs; mix until well blended. Press onto bottom of 9-inch square baking dish; sprinkle with 3/4 cup of the cheese. Set aside.

COOK and stir onions in medium nonstick skillet sprayed with cooking spray 5 min. or until tender. Remove from heat; stir in spinach. Spoon half of the spinach mixture over cheese layer in baking dish; top evenly with peppers. Cover with layers of the remaining 3/4 cup cheese and the remaining spinach mixture. Beat remaining 4 eggs lightly; pour over ingredients in baking dish. Top evenly with tomatoes.

BAKE 40 to 45 min. or until center is set.