Macaroni with Ham and Cheese Deluxe

Ingredients (11)

• + 1 (16 ounce) package elbow macaroni add to pantry
• + ¼ cup butter add to pantry
• + 1 onion, chopped add to pantry
• + 1 teaspoon minced garlic add to pantry
• + 1 green bell pepper, chopped add to pantry
• ✓ 4 cups cubed, fully cooked ham
• + 4 ounces shredded Monterey Jack cheese add to pantry
• + 4 ounces shredded hot pepper Monterey Jack cheese add to pantry
• + 2 ounces shredded sharp white Cheddar cheese add to pantry
• + ¾ cup milk, or more as needed add to pantry
• + 4 Italian plum tomatoes, cut into wedges add to pantry