Preheat oven: Preheat your oven to 250°F (120°C). Line a large baking sheet with parchment paper or a silicone baking mat.
Mix seasoning: In a large bowl, combine the ranch seasoning mix, garlic powder, onion powder, dill (if using), and red pepper flakes (if using).
Toss the crackers: Add the oyster crackers to the bowl, then drizzle with the vegetable oil. Toss everything together until the crackers are well-coated in the seasoning.
Bake: Spread the seasoned crackers evenly on the prepared baking sheet. Bake for 30-40 minutes, stirring every 10 minutes to ens
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