This is a hearty side dish to serve with any kind of beef, pork, fish, or roast chicken.
Cut potatoes into 1/4-inch slices and fennel into 1/4-inch wedges; reserve fronds. In a large skillet, heat olive oil over medium-high. Add fennel and cook, turning occasionally, until golden brown on both sides, 8 minutes. Add potatoes and cook until golden, about 3 minutes. Stir in broth, season with salt and pepper, and bring to a simmer. Cover and cook until vegetables are tender, about 12 minutes. Sprinkle with fennel fronds and serve with lemon wedges.