Cheesy Beef and Orzo Casserole

INGREDIENTS

1 lb

ground beef

8 oz

orzo

2 tbsp

olive oil

4 cloves

garlic, minced

large yellow onion, chopped

1 cup

chopped celery

1 tbsp

all purpose flour

1 16 ounce can

petite diced tomatoes; drained

2 tsp

dried oregano

1/2 cup

beef broth

4 oz

can chopped olives

1 cup

shredded mozzarella cheese, divided

1 cup

shredded provolone cheese, divided

salt and freshly ground black pepper,

cayenne pepper,

fresh mini buffalo mozzarella, sliced in half, to top