Rinse meat cold, dab dry. Peel onions and cut into large cubes. Peel garlic and chop roughly. Wash thyme and shake dry. Put the meat, onions, garlic and thyme in a large sealable bag, add apple juice, close the bag and distribute everything well in the bag. Chill the mixture for about 8 hours (preferably overnight).
The next day cut the peppers in half, clean, wash and cut into wide strips. Clean, wash and cut the spring onions into three. Peel carrots and cut them into sticks of about 5 cm length. Wash the zucchini, grate dry, cut off the ends, halve the zucchini lengthwise and cut into approx. 1 cm thick diagonal slices. Spread vegetables on the fat pan of the oven, add broth, season with salt and pepper.
Remove the meat from the marinade and bind it firmly with kitchen string to 2 roasts. Season with salt and pepper. Mix paprika powder with oil and brush roasts with it. Place the meat on the oven rack on the middle shelf in the preheated oven (electric cooker: 200 °C/ circulating air: 175 °C/ gas: see manufacturer), place the fat pan with the vegetables in it and cook for 1 1/4-1 1/2 hours. Loosen kitchen string from the roast and cut the roast into slices. Arrange on the vegetables.