Heat Raspberries, sugar, and lemon juice in a saucepan over medium high heat. Heat until raspberries come to a low boil (takes about 10-15 minutes). Add the cornstarch (premixed into the 2 teaspoons of water). Simmer for 2-3 more minutes, stirring constantly. Remove from heat and set aside.
Preheat oven to 350ºF. Slice bread in half lengthwise and place both halves into oven (cut side up) until heated through and beginning to toast (about 5-7 minutes). Remove from oven and layer the ham/pork and brie cheese on one half. Place back into oven until cheese is melted and ham/pork is heated through (about 8-10 minutes).
Remove from oven and drizzle top half with a few tablespoons of raspberry sauce, and place it on top of the half with the ham/pork and brie. Be prepared to absolutely devour!
Recipe by Honest Cooking at https://honestcooking.com/sliced-pork-tenderloin-raspberry-and-brie-toasted-sandwich/