Best Tuna Noodle Casserole - The Weary Chef

Ingredients

• 6 ounces bite-sized pasta (about 3 cups)
• 1 tablespoon butter
• 1 cup sliced celery
• 1/2 white or yellow onion chopped
• 1/2 green bell pepper chopped
• 10 1/2 ounces can condensed cream of celery soup
• 1/2 cup milk
• 10 ounces canned solid white tuna drained
• 1/2 cups mayonnaise
• 4 ounces jarred chopped pimento drained
• 1/2 teaspoon salt
• 1 cup cheddar cheese shredded
• black pepper to taste
• 1/3 cup slivered almonds