Spicy Nduja Meatball Sliders with Arugula Pesto (Ready in 45 Minutes)

Ingredients

• 1 lb (450 g) ground pork
• 4 oz (115 g) nduja, casing removed
• 1/2 cup (50 g) breadcrumbs
• 1/4 cup (60 ml) whole milk
• 1 large egg
• 3 cloves garlic, minced
• 2 tablespoons fresh parsley, chopped
• 1/2 teaspoon fennel seeds, lightly crushed
• 1/2 teaspoon kosher salt
• 1/4 teaspoon black pepper
• 1 tablespoon olive oil, for searing
• 3 cups (90 g) baby arugula
• 1/3 cup (45 g) pine nuts, toasted
• 1/2 cup (45 g) grated Parmesan
• 1 small clove garlic
• 2 tablespoons lemon juice
• 1/2 cup (120 ml) extra-virgin olive oil
• Salt to taste
• 12 slider buns
• 6 oz (170 g) provolone cheese, thinly sliced
• Extra olive oil, for brushing