How to Make It
Heat fennel and peppercorns in a small, dry skillet over medium-high, stirring often, until fragrant, 3 to 4 minutes; transfer to a cutting board. Using a knife or the bottom of a skillet, crack into very small pieces.
Reduce heat to medium and add butter to skillet. Cook, swirling, until butter is melted, smells toasty, and is slightly browned, about 2 minutes. Remove from heat and whisk in oil and cracked fennel and peppercorns.
Spoon ricotta into a shallow bowl, creating dips with the back of a spoon. Drizzle warm oil mixture over and top with flaky salt.