Preheat your oven to 300 degrees F to ensure it’s ready for baking.
In a large mixing bowl, combine the melted vegan butter, sesame seeds, garlic powder, onion powder, smoked paprika, dried parsley, red pepper flakes (if using), and soy sauce. Gently toss the Ritz crackers in the mixture, they should be evenly coated with the seasoning.
Arrange in a single layer on two large baking sheets. Make sure they do not overlap for even baking.
Bake the crackers in the preheated oven for 20 minutes, turning them over halfway through the baking time.