Preheat the inner pot for 10 Minutes on Sauté, Normal/Medium.
Melt half of the butter in the inner pot, then sauté the diced onion, minced garlic, and thyme until fragrant and translucent, about 7-8 Minutes.
Add the chicken broth, halved cherry tomatoes, potato gnocchi, and salt. Stir to combine to ensure the gnocchi are coated in liquid. Top with remaining butter.
Pressure cook on High for 1 Minute, and immediately quick release the pressure.
Season the gnocchi with more salt to taste and serve with extra thyme leaves.