Christina's Beet Ravioli with Poppyseed Butter

adapted from Bon Apetit

2 large red or golden beets (about 14 ounces)
1/2 cup fresh whole-milk ricotta cheese (1/2 homemade batch)
3/4 tsp salt
1/4 tsp freshly ground black pepper
2 tablespoons dried breadcrumbs (can also used seasoned or Italian), possibly more depending on consistency of beetss
1 1/4 pounds fresh egg pasta (or wonton wrappers or spring roll wrappers cut in fourths)
1/2 cup (1 stick) salted butter
1 tablespoon poppy seeds
Freshly grated Parmesan cheese

Preheat oven to 400°F. Wrap beets individually in foil; place on baking sheet. Roast until tender when pierced with knife, about 1 hour. Open foil carefully (steam will escape). Cool. Peel beets; finely grate into medium bowl (or use a grater/shredder attachment on food processor--much faster! Add ricotta cheese and season with salt and pepper. Stir in breadcrumbs; I used an extra tablespoon of breadcrumbs since the filling still seemed watery to me.

Optional (if creating pasta dough from scratch): Roll Fresh Egg Pasta dough into sheets according to recipe. Place 1 dough sheet on work surface. Using 3-inch round biscuit cutter, cut sheet into 7 rounds. Transfer rounds to lightly floured baking sheet; cover with plastic wrap. Repeat with remaining dough for total of 56 rounds.
Sprinkle 2 smooth kitchen towels with flour. Place 8 pasta rounds on work surface, keeping remaining dough covered with plastic. Place small bowl of water next to work surface. Spoon 1 teaspoon beet filling onto half of each round (for spring roll wrappers cut in fourths, I used 1 1/2 - 2 teaspoons). Dip fingertip into water and dampen edge of 1 round. Fold dough over filling, pushing out as much air as possible and pressing edges firmly to seal. Transfer to prepared towels. Repeat with remaining rounds. DO AHEAD Can be prepared 1 week ahead. Transfer to rimmed baking sheet and place in freezer until frozen solid, about 6 hours. Transfer ravioli to resealable plastic bags.
Melt butter in large skillet over medium heat and stir in poppy seeds; keep warm. Working in batches, cook ravioli in large pot of boiling salted water until cooked through, stirring often, about 2 minutes. Using slotted spoon, transfer to skillet with melted butter; toss to coat. Divide ravioli among 8 plates; sprinkle with Parmesan.