Cheesy Ground Beef Quesadillas

Ingredients

• 1 lb ground beef, 80/20 blend works best
• 1/2 cup yellow onion, finely diced
• 2 garlic, cloves, minced
• 1 tsp chili powder
• 1/2 tsp ground cumin
• 1/2 tsp smoked paprika
• 1/2 tsp salt, or to taste
• 1/4 tsp black pepper, freshly cracked
• 8 flour tortillas, burrito size, 10-inch
• 2 cups shredded cheddar cheese, freshly shredded melts best
• 1 cup shredded Monterey Jack cheese
• 2 tbsp butter, softened, for the skillet
• 1/2 cup sour cream, for serving, optional
• 1/2 cup salsa, for serving, optional