Step 1

Whisk polenta and 4 cups water in Instant Pot until combined. Season with 1 tsp. salt and several grinds of pepper. Bring mixture to a simmer over medium-high, whisk again, then seal pressure cooker according to manufacturer’s directions. Cook at high pressure for 9 minutes. When timer goes off, manually release pressure. Carefully open lid and whisk polenta until homogenous and creamy.

Step 2

Whisk butter into polenta, then gradually add 4 oz. Pecorino, whisking until melted. Taste and season with more salt, if needed, and lots of pepper.

Step 3

Transfer polenta to a wide shallow bowl. Top with more cheese and coarsely grind more pepper over.