Instant Pot Kale and Artichoke Dip

Name: Instant Pot Kale and Artichoke Dip
Ingredients: 3 Tbs. olive oil; 1 yellow onion, finely chopped; 2 garlic cloves, minced; 1 can (14 oz.) artichoke hearts, drained and coarsely chopped; 1 large bunch kale, stemmed and coarsely chopped; 1 package (8 oz./250 g) cream cheese; 1/2 cup (4 oz./125 g) mayonnaise; 1/2 cup (4 oz./125 g) sour cream; 3/4 cup (3 oz./90 g) grated Parmesan cheese; 1 1/4 cups (5 oz./155 g) shredded mozzarella cheese; 1 1/2 tsp. Worcestershire sauce; 1/2 tsp. cayenne pepper; Salt and freshly ground black pepper; Crostini or fresh baguette slices for serving