Mash the Avocado: In a mixing bowl, mash the avocados until smooth. Stir in garlic, lime juice, sea salt, cracked pepper, and crushed red pepper until combined.

Combine Ingredients: Fold in black beans, corn, red onion, and cilantro into the avocado mixture until evenly coated.

Prepare the Skillet: Heat a non-stick skillet over medium heat and add olive oil, allowing it to warm until shimmering.

Assemble Quesadillas: Spoon half of the avocado mixture onto one tortilla half, fold over, and seal. Repeat with remaining tortillas.

Cook Quesadillas: Place folded quesadillas in the skillet, cooking for 2-3 minutes on each side until golden brown.

Serve and Enjoy: Transfer quesadillas to a cutting board, cool for a minute, then slice and serve with salsa or guacamole.