2 spray cooking spray
2 tsp olive oil
1 small red onion, scrubbed and thinly sliced
1/2 pound new potatoes, cut into 1/8-inch slices
1 tsp kosher salt
6 oz (1 1/4 cups) cherry tomatoes, halved or quartered if large
1/3 cup basil, thinly sliced
5 large eggs
1/4 tsp black pepper
1/8 tsp ground nutmeg
1/2 cup part-skim ricotta cheese
LIne 4- or 5-quart slow cooker with plastic slow cooker liner. Spray liner with nonstick spray.
Heat oil in medium heavy nonstick skillet over medium-high heat. Add onion and cook, stirring, until beginning to soften and turn golden, about 6 minutes. Add potatoes and sprinkle with 1/4 teaspoon salt; cook, stirring, until potatoes are partially cooked, about 4 minutes, reducing heat to medium if onion browns too quickly.
Transfer potato mixture to prepared slow cooker, spreading to form even layer; sprinkle with 1/4 teaspoon salt. Top with tomatoes and basil. Beat eggs, pepper, nutmeg, and remaining 1/2 teaspoon salt in medium bowl; pour over potato mixture. With fork, gently stir to ensure eggs are mixed throughout. Dollop ricotta on top, spacing evenly. Cover and cook until potatoes are fork-tender and knife inserted into center of frittata comes out clean, 3-3 1/2 hours on Low. (Carefully remove lid to prevent condensation from dripping onto frittata.)
Using liner as handles, lift out frittata and set on work surface; let stand, uncovered, 5 minutes. Cut frittata into 4 wedges.
Per serving: 1 wedge
3 smart points