Development of yellow seeded variety with high seed yield and oil content is one of the breeding objectives of Ethiopian mustard (Brassica carinata). In order to realize this objective, the breeding work had been stated from enhancement of the available gene pools through hybridization and recurrent selection. In line of this, target crossing was made among the adapted varieties and some introduced oilseed brassica sp. Selection was made at F2 subsequent generation till F5 along with single plant selection from the adapted and local landraces. During the second cycle of selection, the breeding lines were classified in terms of seed color (i.e. yellow, brown and mixed). Evaluation of selected lines for agro-morphological traits and selection for yellow seed colour were conducted simultaneously since the second cycle of recurrent selection. After the third cycle of selection, where 64 brassica genotypes identified, the extent of genetic variability, heritability and genetic advance were analyzed for agro-morphological traits of the selected genotypes. Multi-location trials was also conducted for the selected yellow seeded genotypes for two years (2015/16 and 2016/17). A considerable level of variability was noticed for all traits studied. High phenotypic and genotypic variances was recorded for yield/plot, number of pods/plant and plant height The efficiency of recurrent selection was proven by the result of high heritability in broad sense for traits such as TSW, number of primary and secondary branch as well as yield per plot. Six yellow seeded and productive genotypes from the recurrent selections lines sourced from cross S-67 X Holetta-1 was found and promoted to national variety trials. According to combined analysis of the multi-location trial, two genotypes, S-67XHoletta-1/7/2/14/2/28/2 and S-67x Holetta-1/9/2/18/2/45/3 were significantly outsmart the existing yellow seeded variety (yellow doddola) with yield advantage of 28% and 22%, respectively. These advanced genotypes scored 47 % oil content which exceeds yellow doddola by 6 to 7%. The two yellow seeded Ethiopian mustard genotypes were released and registered as improved varieties which could be used to address the existing export demand of Ethiopian mustard for oleo-chemical industries and beyond.