Turkey Broccoli Melt

Prepare a sheet pan by lining it with aluminum foil or parchment paper. Adjust the oven racks so that the top shelf is 6-8 inches from the broiler flame or element. Turn on the broiler to preheat.
Make the ranch sauce: Combine the ranch seasoning powder, mayonnaise, milk, and sour cream in a small bowl. Whisk to fully combine and set aside.
Toast the two slices of sourdough.
Chop the broccoli into small pieces. Dice the tomato to yield ½ cup.
Steam the broccoli florets in a microwaveable bowl for 2 minutes with one tablespoon of water. Drain the broccoli and chop it into small pieces. Toss the steamed broccoli with the diced tomato and set it aside.
Spread each slice of sourdough with a thin layer of the ranch sauce. Divide the turkey between the two pieces of toast.
Top the turkey with the broccoli and tomato mixture. Drizzle the toasts with the remaining ranch sauce and top with the sliced cheese. Make sure the entire surface of the sandwich is covered with the cheese slices.
Place the toasts on a sheet pan and broil, 3-4 minutes, or until the cheese is melted and bubbling. Keep a close eye on the sandwiches to prevent burning! Slice each toast in half and serve immediately.