Delicious Tuna-Mushroom Noodle Casserole

INGREDIENTS

• 1/4 cup butter
• 1 -2 cup thinly sliced mushroom
• 1 small green bell pepper, seeded and finely chopped (can use red bell pepper or use both!)
• 1 small onion, finely chopped
• 1 large stalk celery, finely diced
• 1 -2 tablespoon fresh minced garlic (optional or to taste)
• 1/4 cup flour
• 2 1/2 cups half-and-half cream
• 2 cups grated cheddar cheese
• 1 cup flaked solid white tuna, well drained (I just use a small can or can add in 2 cans)
• 1 (375 g) package egg noodles, cooked
• salt and pepper
• 3/4 cup breadcrumbs or 3/4 cup finely ground cracker crumb
• 1/4 cup grated parmesan cheese (optional)
• 3 tablespoons butter, melted