Preheat oven to 450°F.
Dice ½ beefsteak tomato and cut 1 avocado into small bite-size pieces; set aside.
1/2 beefsteak tomato, 1 avocado, cut into small bite-size pieces
Seed and thinly slice 1 jalapeño; set aside.
1 jalapeno
Bring homemade chili to a simmer on the stovetop.
Homemade chili
Make the queso: over medium heat, add ½ tbsp cornstarch and gradually whisk in 6 oz almond milk, stirring constantly so the cornstarch fully dissolves. Cook until the milk begins to bubble around the edges. (See notes 1)
6 oz almond milk (see notes 4), 1/2 tbsp cornstarch
Reduce heat to medium and add 9 slices American cheese and 3 oz skim mozzarella cheese, stirring until fully melted and blended with the milk.
9 slices white American cheese, 3 oz skim mozzarella cheese
Season with ½ tsp chili powder and ¼ tsp nutmeg. Keep queso warm over very low heat.
1/2 tsp chili powder, 1/4 tsp nutmeg
In a large baking dish, layer chips on the bottom, cover with cheddar cheese, add a second layer of chips, and top with the remaining cheddar cheese. (See notes 2, 3, 4)
8 oz low-fat shredded cheese (see notes 4), 1 bag yellow corn tortilla chips (see notes 2, 3)
Bake for 5 minutes, or until the cheese is melted.
Pour the warm queso over the melted-cheese chips.
Spread the simmered chili on top.
Scatter the diced tomato and avocado over the chili.
Garnish with cilantro leaves and thinly sliced jalapeño.
1 bunch cilantro leaves