The Kitchn: Every party needs a seven-layer dip
7. Olives: This feels like an odd choice for a final layer (is there a subculture of taco-lovers who put olives on top?), but it's classic. Scatter one small can of drained, sliced black olives over top, and the dip is finished. If olives aren't your thing, sliced scallions are a good substitute.
How to serve the dip
Trifle dishes and deep glass bowls are often used for this dip because they illustrate the layers, but they make it almost impossible to get all the layers with just one dip of your chip. The better choice is a clear, shallow casserole dish, so the layers are still visible but dipping is much easier.
Seven-Layer Dip
Serves 10 to 12 as an appetizer
1 (16-ounce) can refried beans
2 large cloves garlic
1 teaspoon kosher salt, plus more for the tomatoes
4 medium avocados
1/4 cup freshly squeezed lime juice (from about 2 limes)
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