Peel the carrots, wash and quarter them lengthwise. Wash and peel the asparagus and cut in half lengthwise. Cut everything into pieces about 6 cm long. Peel, wash and cut the kohlrabi into sticks. Cook ribbon noodles in boiling salted water for about 9 minutes. Drain, quench and let drain.
Mix noodles with oil. Wash parsley and thyme, dab dry and chop finely, put aside. Cook the carrots and kohlrabi for about 4 minutes in boiling salted water, drain. Cook the asparagus in boiling salted water for about 7 minutes. Add peas and cook for about 1 minute. Drain, collecting 125 ml of vegetable water. Melt the fat in a saucepan, stir in the flour. While stirring, deglaze with vegetable water and cream. Simmer for about 2 minutes. Season with salt, pepper and nutmeg. Stir in prepared herbs. Put 1/4 of the pasta into a greased casserole dish, spread 1/3 of the vegetables and 1/3 of the sauce on each.
While stirring, deglaze with vegetable water and cream. Simmer for about 2 minutes. Season with salt, pepper and nutmeg. Stir in prepared herbs. Put 1/4 of the pasta into a greased casserole dish, spread 1/3 of the vegetables and 1/3 of the sauce on each. Repeat until all ingredients are used up. Finish with noodles. Remove the crusts from the toast and chop in a mixer. Spread crumbs on the lasagne. Cook lasagne in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 45 minutes. Cover at the end of the baking time if necessary. Garnish with thyme
Finish with noodles. Remove the crusts from the toast and chop in a mixer. Spread crumbs on the lasagne. Cook lasagne in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 45 minutes. Cover at the end of the baking time if necessary. Garnish with thyme