1
Preheat your oven to 425 degrees Fahrenheit. Brush both sides of the corn tortillas with oil and lightly sprinkle with kosher salt.
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2
Bake the tortillas for 4 minutes, then flip and continue baking for another 4 to 8 minutes, until they are golden and crispy.
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3
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4
To assemble the tostadas, spread a spoonful of refried beans on each crispy tortilla, followed by a layer of guacamole.
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