01 - Cook elbow macaroni in salted boiling water following package directions until al dente. Drain thoroughly and set aside.
02 - In a medium saucepan over medium heat, melt 1 tablespoon butter. Whisk in flour and cook for 1 minute, stirring constantly to form a smooth paste.
03 - Gradually pour in milk while whisking continuously. Cook for approximately 2 minutes until sauce thickens and bubbles. Remove from heat.
04 - Stir in shredded cheddar cheese until completely melted and smooth. Season with salt, black pepper, and paprika. Add cooked macaroni and mix thoroughly. Allow to cool slightly.
05 - Place tortilla on flat surface. Spread one-quarter of mac and cheese mixture over half the tortilla. Sprinkle with 2 tablespoons Monterey Jack. Fold tortilla in half. Repeat with remaining ingredients.
06 - Heat large skillet or griddle over medium heat. Melt small amount of butter. Cook quesadillas 2-3 minutes per side until golden brown and crispy, pressing gently with spatula.
07 - Transfer cooked quesadillas to cutting board. Let rest 1 minute. Cut into wedges and serve immediately.