Ingredients:
8 ounces pepper Jack cheese, shredded (2 cups)
4 ounces American cheese, shredded (1 cup)
2 teaspoons cornstarch
1 (10-ounce) can diced tomatoes with chiles, such as Ro-Tel
1 (12-ounce) can evaporated milk
Kosher salt
Finely chopped red onion, sliced jalapeños, chopped cilantro leaves, and tortilla chips, for serving
Instructions:
In the bowl of a 1 1/2-quart slow cooker, toss both cheeses with cornstarch to evenly coat. Stir in tomatoes and evaporated milk; season with salt.
Cover and cook on low until mixture is bubbling and thickened slightly, 2 to 2 1/2 hours. Uncover and stir until smooth. Season with more salt and garnish with onion, jalapeños, and cilantro. Serve with tortilla chips on the side.
https://www.marthastewart.com/1545549/slow-cooker-queso